Match groups with their appropriate electron configuration

Group 15
Group 18
Lathanides and Actinides
Group 17
Group 1
Group 14
Group 16
Groups 3-12
Group 2
Group 13


a. s2 p4
b. s1
c. s2 p6
d. s2 p2
e. s2 p1
f. s2 p5
9. s2
h. fill d orbitals
i. fill f orbitals
j. s2 p3

Answers

Answer 1

The valence electronic configuration of group 17 is s² p⁵, and that for group one is s¹ and group 16 is s² p⁴. For group 3 -12 the valence electrons fill in d - orbitals. and for group 2 it is s². for group 13- s² p¹. For lanthanides and actinides, the valence electrons fill in f- orbitals.

What is electronic configuration?

The filling of electrons of an atom from the lower energy level to the higher energy level is called its electronic configuration. The group number for atom with  3 and more electrons are 10 added to these numbers.

For group 15, there are 5 valence electrons and the valence electronic configuration is :  s² p³.

For group 18 :  s² p⁶.

For group 16 : the valence configuration is s² p⁴. And for group 17 it is s² p⁵. Group 1 and 2 have the valence electronic configuration as  s¹ and s² respectively.

Group 14, the configuration is s² p² and the that for group 13 is s² p¹.  Elements of group 3 - 12 are d - block elements. The valence electrons of  these elements fall in d- orbital.

Similarly lanthanides and actinides are f - block elements. Their valence electrons are filled in f- orbitals.

To find more on electronic configuration, refer here:

https://brainly.com/question/29757010

#SPJ1


Related Questions

what volume of oxygen is produced at stp when 6.58 x 1024 molecules of water is decomposed according to the following reaction?

Answers

122 L of oxygen is produced at STP when water is decomposed to the reactants. here decomposition reaction occurs.

Decomposition Reaction is the process or effect of simplifying a single chemical entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis. Decomposition reaction of water can be written as,

        2H2O  → 2H2 + O2

Oxygen is produced at STP when 6.58 x 1024 molecules of water is decomposed. So there will be,

      0.5 × 6.58 × 1024

     = 3.29 × 1024  O2 molecules.

1mole = 6.02×1023 particles, so the amount produced is:

     = 3.29×1024 / 6.02×1023

     = 5.47mole

At an STP of 273K, 1atm the volume is 22.4L/mole

So the volume of oxygen is 5.47 × 22.4 = 122L

To learn more about Decomposition Reaction please visit:

https://brainly.com/question/27300160

#SPJ4

in the laboratory you are asked to make a 0.643 m nickel(ii) iodide solution using 355 grams of water. how many grams of nickel(ii) iodide should you add

Answers

The amount of nickel(ii) iodide that should be added for making the solution is 71.3 kilograms.

As the molality and weight of water is given, we will use the formula of molality to find the mass of nickel(ii) iodide.

Molality = number of moles of nickel(ii) iodide/weight of solvent in kilograms

Number of moles = mass/molar mass

Molar mass = 312.5 grams

Keep the values -

0.643 = moles/355

Moles = 228.3

Mass = 228.3 × 312.5

Performing multiplication on Right Hand Side of the equation

Mass = 71,332.8 grams

Mass = 71.3 kilograms

Learn more about molality -

https://brainly.com/question/24065939

#SPJ4

Which of the following statements about the nucleus is true?

Answers

Answer:

The nucleus is surrounded by a double unit membrane from all sites. The chromosomes and genes which have genetical characters and transmit from one generation to another are found in the nucleus.

Explanation:

Which one of the following conditions would always result in an increase in the internal energy of a system? A) The system loses heat and does work on the surroundings. B) The system gains heat and does work or the surroundings. C) The system loses heat and has work done on it by the surroundings. D) The system gains heat and has work done on it by the surroundings. E) None of the above is correct

Answers

The system gains heat and has work done on it by the surrounding, this condition would always result in an increase in the internal energy of a system. thus the option D is correct.

When a system is heated or has work done on it by its environment, the internal energy of the system is constantly raised. Energy is an immaterial substance that is concerned with performing work on an item. One of the fundamental conservation rules that holds true throughout the cosmos is the conservation of energy. A type of energy is internal energy. The total kinetic energy of each gas molecule can be considered to be the internal energy U of our system. In other words, when the gas's temperature T rises, its molecules move more quickly and its internal energy U rises.

to know more about internal energy please visit.

https://brainly.com/question/14668303

#SPJ4

an aqueous solution at has a h30 concentration of . calculate the concentration. be sure your answer has the correct number of significant digits

Answers

H3O+ is present in aqueous solutions with a concentration of 8.8 1012 M at 25 °C. Determine the amount of OH present. Please include significant digits in your response. OH ([OH]) concentration: Take water's ability to ionize itself as an example. 2 H2O(aq), H3O+(aq), and OH (aq)

Kw = [H3O+] [OH] = 1.0 1014 [OH] = 1.0 1014 / [H3O+][OH] = 1.0 1014 / 8.8 1012 [OH] = 1.1 103 M is the equilibrium constant for this reaction.

How much H3O+ is present in water?

In pure water, there are 10-6mol dm-3 H3O + ions present.

How is the pH of a solution determined using H3O?

The hydronium ion concentration in moles per liter must be known in order to compute the pH of an aqueous solution (molarity). After that, the pH is determined using the formula pH = - log [H3O+].

To know more about aqueous solution visit :-

https://brainly.com/question/26856926

#SPJ4

What process is represented by this redox equation?
-
6H20 + 6CO2
C6H1206 +602
A. Cellular respiration
B. Rusting
C. Photosynthesis
D. Combustion

Answers

The process that is represented by this redox equation

6 H₂O + 6 CO₂ --->  C₆H₁₂O₆ + 6 O₂ is  photosynthesis.

The correct option is C.

What is a redox reaction?

A redox reaction is a reaction in which oxidation and reduction occur simultaneously at the same time and to the same extent.

In a redox reaction, electrons are transferred from one species to another.

The species that transferred electrons becomes oxidized whereas the species that accepts electrons becomes reduced.

Hence, a reduction reaction is a reaction in which a chemical species accepts electrons while an oxidation reaction is a reaction in which a chemical species donates electrons.

Considering the given reaction:

6 H₂O + 6 CO₂ --->  C₆H₁₂O₆ + 6 O₂

In the given reaction, carbon is reduced while oxygen is oxidized.

The reaction shows the process of photosynthesis where carbon dioxide is reduced to produce glucose.

Learn more about redox reactions at: https://brainly.com/question/26263317

#SPJ1

a paricular vitamin's chemical formula has one colat atom. what is the molar mass of the vitamin if it conatain 4.34% cobalt

Answers

You can use the molecular mass of Co with its percentage composition to discover the molar mass of cyanocobalamin is 59.903g.

Atomic mass Co = 58.901 amuPercent cobalt with the aid of using mass = 4.34%To discover the molar mass of 1 percentage of the molecule, divide the atomic mass of Co with the aid of using its percentage of general composition.1 percentage of cyancobalmin = 58.901 amu / 4.34% = 13.5715 amuSo now multiply this with the aid of using 100%1357.15 amuThe molar mass of cyanocobalmin is 1357.15 g/molCheck 4.34 percentage of 1357.15 is 59.903 .

Read more about atom:

https://brainly.com/question/621740

#SPJ4

What is the mass of a neutron in atomic mass units (amu)?

Answers

The mass of a neutron in atomic mass units is 1.008665 amu

Because neutrons are atomic particles, neutrons are a component of atoms. The English physicist James Chadwick discovered neutrons for the first time in 1932. He found the presence of a particle with no electric charge while conducting radioactivity studies, and he named it the neutron which typically has zero charge.

The atomic mass unit or AMU is a unit of mass used to express the masses of atoms and molecules. The mass of a neutron is almost the same as the mass of a proton whereas the electron is much less massive. In terms of AMU, the mass of a neutron in atomic mass units is 1.008665 amu

Read more about neutrons on:

https://brainly.com/question/14246332

#SPJ4

how many of the following molecules possess dipole moments? bh3, ch4, pcl5, h2o, hf, h2

Answers

BH3,CH4,PCl5,and H2 have zero dipole moment whereas the H2O and HF have permanent dipole moment.

what is dipole moment?

The bond dipole moment is the moments but property of the chemical bond that is used to measure the polarity of the bond within a molecule.

BH3 a non-polar molecule owing to its symmetric structure.

CH4 forms a regular tetrahedral structure and has very small electronegativity difference between the atoms that cancels out each other due to their directional vectors. Thus CH4 is non polar.

PCl5 is made up of polar P−Cl bonds that form a trigonal bipyramidal molecular which is arranged symmetrically thus the PCl5 molecule is nonpolar.

H2O is a polar compound with a bent shape, which is the reason for the polarity of the compound.

HF is a polar molecule owing to higher electronegativity difference and no other bonds to cancel the polarity thus formed.

H2 is a diatomic molecule and hence it is non-polar.

Thus, the atoms that possess dipole moments are H2O,HF .

learn more about dipole moment:

https://brainly.com/question/14140953

#SPJ4

Which of the following is NOT an ionic compound?
A. AIN
B. CO
C. K20
D. Li2O

Answers

CO is not ionic because both elements in the compound are gases. Therefore the answer is B. Please give brainliest I need five more

What information does a molecular formula provide?

A. the number and kind of atoms that are bonded by the transfer of electrons
B. the simplest whole number ration of atoms that are bonded by the transfer of electrons
C. information about a molecule's structure
D. the number and kind of electrons present in a molecule

Answers

The information in which molecular formula helps to provide is the number and kind of electrons present in a molecule.

The correct answer choice is option d.

What is a molecular formula?

A molecular formula is a formula which which helps to give information about the characteristic feature of an molecules as to the number and kind of electrons present in it.

A molecule is a substance which can normally exist alone and still retain the chemical properties of that substance.

In conclusion, we can now confirm from the explanation given above that molecular formula helps to to understand the constituent of a molecular substance.

Read more on molecular formula:

https://brainly.com/question/13058832

#SPJ1

which of the following geometries for the complex ion [co(en)(h2o)4]2+ are possible?

Answers

Octahedral type of molecular geometries are possible for the complex ion [Co(en)(H2O)4]2+.

In chemistry, an octahedral molecular geometry (also called a square bipyramid) is a compound with six atoms or groups of atoms or ligands arranged symmetrically around a central atom and defining the vertices of the octahedron represents the shape of The octahedron has eight faces, so the prefix is ​​okta. The octahedral shape is characterized by Octahedral bond angle values of 90° and 180° define the octahedral shape. The angles between the four atoms forming the square bases of the two pyramids of the octahedral structure are 90°, as is the angle between each of these atoms and one of the apex atoms.

For more information on Molecular geometries , visit :

https://brainly.com/question/19557384

#SPJ4

Complete question :

Which of the following geometries for the complex ion [Co(en)(H2O)4]2+ are possible?

Check all that apply

trigonal bipyramidal or square pyramidal

octahedral

linear

tetrahedral or square planar

trigonal planar

the combustion of g benzoic acid increases the temperature of a bomb calorimeter by . calculate the heat capacity of this calorimeter.

Answers

With this method, a sample is burned in a bomb calorimeter at a constant volume. Equation q = -CT, where C is the calorimeter's heat capacity and T is the temperature change, can be used to determine how much heat is released during the reaction.

If 1.000 g of benzoic acid burns in a bomb calorimeter to produce 26.38 kJ of heat, 0.550 g of benzoic acid will produce the following amount of heat:Conventionally, heat release is denoted by a negative sign.The sum of the heat emitted by combustion (Qc) and the heat absorbed by the bomb calorimeter (Qb) equals zero, according to the Law of Conservation of Energy.

The temperature of the bomb calorimeter rose from 22.01 °C to 24.27 °C after absorbing 14.5 kJ. Using the following expression, we can determine the calorimeter's (C) heat capacity.

In a bomb calorimeter, the combustion of 0.550 g of benzoic acid raises the temperature from 22.01 °C to 24.27 °C.

Learn more about calorimeter  here:

https://brainly.com/question/4802333

#SPJ4

calculate the ph of the resulting solution if 25.0 ml of 0.250 m hcl(aq) is added to 35.0 ml of 0.250 m naoh(aq)

Answers

The pOH of the resulting solution is 1.38 as the resulting solution is basic in nature.

M HCl= 0.250 M

M NaOH= 0.250 M

V HCl=25.0 ml

V NaOH=35.0 ml

In order to calculate the pOH of the solution,

M mix= 0.250x25*0.250x35/25+35

M mix=6.25-8.75/60

=2.5/60

=0.0416 M

The solution will be more basic as the milliequivalent of the base is more., thus calculate pOH.

pOH or potential of hydroxide ion is a scale used to determine the hydroxide ion (OH–) concentration in a solution.

[OH-]=Mxnx∝

[OH-]=0.04167x1x1

[OH-]=0.04167 M

pOH=-log[OH-]

pOH=-log 4.167x10^-2

pOH=2-log 4.167

pOH=2-0.62

pOH=1.38

To learn more about concentration check the link below:

https://brainly.com/question/14469428

#SPJ4

HELP ME PLEASE THANK YOU

Answers

Answer: 2.)black

3.)red

4.)yellow

5.) I don't know I am very sorry

6.) I don't know I am very sorry

7.) light blue

8.) purple

9.) dark green

10.)purple

Iron(III) oxide reacts with carbon monoxide gas to form solid iron metal and carbon dioxide gas: Fe2O3+3CO→2Fe+3CO2
If you begin the reaction with 84.34 g of iron(III) oxide and 68.87 g of CO, which reactant will be in excess at the end of the reaction and how many grams will be remaining?

Answers

The 0.118 moles are the mass Iron(III) oxide reacts with carbon monoxide gas to form solid iron metal and carbon dioxide gas: Fe2O3+3CO→2Fe+3CO2.

Limiting and Excess Reactants:There are sorts of reactants which can be utilized in a chemical response process, those are the proscribing reactant and the extra reactant. There is continually a leftover quantity of the extra reactant after a response. The most quantity of merchandise that may be produced relies upon at the proscribing reactant.

mass of Fe2O3, mFe2O3 = 23.zero gmass of CO, mCO = 15.forty gmolecular weight of Fe2O3 MWFe2O3 = 159.sixty nine g/molmolecular weight of CO MWCO = 28 g/molFirst, we display the balanced chemical response:Fe2O3 + 3CO --> 2Fe + 3CO2

First, we convert the loads of the reactants into moles the usage of their molecular weight:

Solving for moles of Fe2O3, nFe2O3,

nFe2O3=mFe2O3MWFe2O3=23.0g159.69gmolnFe2O3=zero.144molesSolving for moles of CO, nCO,nCO=mCOMWCO=15.4g28gmolnCO=zero.55molesIn figuring out the proscribing and extra reactants, we decide the moles required for every reactant if we used all of the given moles adjusted consistent with their mole ratio withinside the balanced response.

The moles ecess reactant =nCO−nCOx=zero.fifty five−zero.432=0.118 molThe mass of the extra reactant left is calculated the usage of its moles and molecular weight,

massexcessreactantleft=mCO×M.

Read more about moles:

https://brainly.com/question/15356425

#SPJ4

What volume will 3.21 moles of oxygen gas occupy at stp

Answers

Answer:

71.9 L

Explanation:

PV = nRT

STP means 273K and 1.00 atm

(1.00 atm)(V) = (3.21 mol)(0.08206 L*atm/mol*K)(273K)

V = 71.9 L

the student then mixes in 20ml of naoh into the solution. the resulting mixture has a ph of 1.8. what was the concentration of the naoh solution that was added to the hcl

Answers

The student then mixes in 20ml of NaOH into the solution. The resulting mixture has a ph of 1.8. 0.135 M was the concentration of the NaOH solution that was added to the HCl.

To determine the concentration of the sodium hydroxide (NaOH) solution that was added to the hydrochloric acid (HCl) solution, we need to know the volume of the NaOH solution and the resulting pH of the mixture. The pH of a solution is a measure of its acidity or basicity. It is defined as the negative logarithm of the concentration of hydrogen ions (H+) in the solution. The concentration of H+ ions is directly related to the concentration of the acid (for an acidic solution) or the concentration of the base (for a basic solution).

In this case, we are given that the resulting mixture has a pH of 1.8 and that 20 mL of NaOH was added to the HCl solution. We can use the pH of the mixture and the volume of the NaOH solution to calculate the concentration of the NaOH solution as follows:

First, we need to convert the pH of the mixture to the concentration of H+ ions. To do this, we can use the formula:

[H+] = 10^(-pH)

Plugging in the value for pH, we get:

[H+] = 10^(-1.8)

= 0.135 M

Next, we need to use the volume of the NaOH solution and the concentration of H+ ions to calculate the concentration of the NaOH solution. Since the NaOH solution neutralized the HCl solution, the concentration of H+ ions in the mixture must be equal to the concentration of the NaOH solution. Therefore, the concentration of the NaOH solution is 0.135 M.

Therefore, the concentration of the NaOH solution that was added to the HCl solution is 0.135 M.

To know more about NaOH please refer: https://brainly.com/question/29854404

#SPJ4

explain how osmotic concentration in sieve tube elements generates pressure and determines flow direction in phloem

Answers

The sucrose is actively transferred to the partner cells, and it diffuses from the companion cells to the sieve tube elements through the plasmodesmata.

As a result, the sucrose concentration in the sieve tube components rises. The same leaf vein receives water through osmosis from the neighboring xylem. The hydrostatic pressure on the sieve tube components rises as a result. Sucrose and other substances are forced through the sieve tube cells by hydrostatic pressure. Water is forced out of the sieve tube cells by osmosis, which reduces the hydrostatic pressure inside the cells. As a result of the entrance of sugars in sieve elements at the source and the elimination of sucrose, the pressure gradient is thus established.

To know more about hydrostatic pressure please click on the link brainly.com/question/14314763

#SPJ4

if the two different types of hydrogen atoms were equally reactive, what ratio of 1-chloropropane to 2-chloropropane would we expect as monochlorination products?

Answers

It is crucial to be able to extend out a line diagram to a condensed formula, therefore the first step in this process.

The next step is to begin sketching the various scenarios as we switch out one hydrogen on a propane cylinder for a chlorine atom. It should be obvious that there are only two options for chlorinating propane: C-1 or C-2 (chlorination at C-3 would give the same product as that at C-1).

Monochlorination means the addition of a chlorine atom. When chlorine atom is added to the below structure. Chlorine will substitute at one of the hydrogens.

Constitutional isomers of these two substances are 1-chloropropane and 2-chloropropane.

To learn more about Chloropropane visit:

https://brainly.com/question/26166842

#SPJ4

given a concentrated solution of 50x concentration tae buffer, what volume (in ml) of this concentrated solution would we dilute to have 500ml of 1x tae buffer solution?'

Answers

We would dilute 10mL of this concentrated solution to make 500ml of a 1x TAE buffer solution.

Dilution is one of the easiest ways to make buffers. This is only applicable, though, if the working solution, which is the desired solution, has the same pH as the stock solution, which is the readily available, more concentrated solution. The dilution equation is employed in the preparation of buffer by dilution:

[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]

where V refers to volume and C represents concentration. The subscripts 1 and 2 often denote the working solution and stock, respectively. Notably, both sides of the equation must always use the same units for concentration and volume.

From a stock of 50X TAE buffer, make 500mL of 1.0X TAE buffer as follows:

[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]

(50X)V1=(1.0X)(500mL)

∴V1=10mL of 50X TAE Buffer

Calculating the volume of the water-based solvent is also necessary to finish the preparation. The remaining amount of water is needed to make the appropriate amount of working solution, which is 500mL.

[tex]V_{water}[/tex]=500mL−10mL=490mL

As a result, 490mL of water is used to dilute 10mL of 50X TAE Buffer.

To learn more about buffer solutions, refer:-

https://brainly.com/question/15709146

#SPJ4

Two cars, one of them is two time as heavy as the other, move down a hill at the same constant speed. Compared to the lighter car, the kinetic energy of the heavier car is ____ as much
half
equal
four times
twice ​

Answers

Answer:

twice

Explanation:

how many moles of naoh are contained in 15.2l of a 0.205m naoh solution? multiple choice 125 moles naoh 0.0134 moles naoh 3.12 moles naoh 74.1 moles naoh 0.0779 moles naoh

Answers

3.12 moles NaOH  are contained in 15.2l of a 0.205m NaOH solution

15.2 x 0.205 = 3.116 moles. By rearranging the equation, you must first determine how many moles are there in this solution. False. Molarity (M) x Volume (L) equals 15.2 x.205, or 3.12 moles.

Molarity (M), which is determined by dividing the solute's mass in moles by the volume of the NaOH  solution in liters, is the most often used unit to represent NaOH solution concentration: liters of solution/moles of solute equals M. One liter of a NaOH  solution with a 1.00 molar concentration (1.00 M) contains 1.00 moles of solute.

learn more about moles here:

https://brainly.com/question/15356425

#SPJ4

write a chemical equation for formation of a polymer via a condensation reaction from the monomers succinic acid (hoocch2ch2cooh) and ethylenediamine (h2nch2ch2nh2).

Answers

HOOCCH2CH2COOH + H2NCH2CH2NH2 ----> Polymer + H2O is the chemical equation for formation of a polymer via a condensation reaction from the monomers succinic acid (hoocch2ch2cooh) and ethylenediamine (h2nch2ch2nh2).

A condensation reaction is a chemical reaction in which two smaller molecules combine to form a larger molecule, releasing a small molecule such as water or methanol as a byproduct. Condensation reactions are often used to synthesize polymer, which are large molecules made up of repeating units called monomers.

To write a chemical equation for the formation of a polymer via a condensation reaction from the monomers succinic acid and ethylenediamine, we can start by representing the monomers as follows:

Succinic acid: HOOCCH2CH2COOH

Ethylenediamine: H2NCH2CH2NH2

In a condensation reaction, the monomers combine through a dehydration synthesis reaction, in which a molecule of water is released as a byproduct. The resulting polymer consists of repeating units of the monomers linked by a covalent bond.

The general chemical equation for a condensation reaction between two monomers can be written as follows:

Monomer 1 + Monomer 2 --> Polymer + byproduct

In this case, the polymer produced by the condensation reaction between succinic acid and ethylenediamine would be a polyamine with repeating units of the monomers linked by a covalent bond. The chemical equation for the formation of this polymer via a condensation reaction would be:

HOOCCH2CH2COOH + H2NCH2CH2NH2 -> Polymer + H2O

It is important to note that the actual structure of the polymer produced in this reaction will depend on the specific conditions of the reaction and the specific monomers involved. The chemical equation provided is a general representation of a condensation reaction between these monomers and does not represent the exact structure of the polymer that would be produced.

To know more about polymer please refer: https://brainly.com/question/8930717

#SPJ4

suppose that 0.08 m^3 of a gas has a gauge pressure of 2 atm and a temperature of 300 k. how many molecules are there in the gas?

Answers

Suppose that 0.08 m^3 of a gas has a gauge pressure of 2 atm and a temperature of 300 k. Approx 27 x 10^20 molecules are there in the gas.

To find the number of molecules in the gas, we can use the ideal gas law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

In this case, we know that the pressure is 2 atm, the volume is 0.08 m3, the temperature is 300 K, and the ideal gas constant is 8.31 J/mol*K. We can solve for the number of moles by rearranging the equation and substituting the known values:

n = (PV) / (RT)

= (2 atm * 0.08 m3) / (8.31 J/mol*K * 300 K)

= 0.0046 mol

Since there are Avogadro's number (6.022 x 10^23) of molecules in one mole of a substance, the number of molecules in the gas is:

Number of molecules = number of moles * Avogadro's number

= 0.0046 mol * 6.022 x 10^23 molecules/mol

= 27 x 10^20 molecules

Therefore, there are approximately 27 x 10^20 molecules in the gas.

To know more about molecules please refer: https://brainly.com/question/19556990

#SPJ4

what is one possible problem from regenerating a greensand bed by adding a higher dosage of potassium permanganate?

Answers

The chemical element KMnO4 is the same as potassium permanganate. Manganese is in the +7 oxidation state in this salt. The salt is also referred to as "potash permanganate." The ion of permanganate is a potent oxidizer.

Another popular technique for treating water to remove sulfur is manganese greensand. It is often advised for water with less hydrogen sulfide than 6.0 mg/l. A unique coating on a manganese greensand filter causes hydrogen sulfide gas to oxidize into solid sulfur particles, which are then filtered. Potassium permanganate is used to rejuvenate the greensand after all of the manganese oxide has been used up. Potassium permanganate is a purple oxidizing chemical that is added to the untreated water to maintain the manganese greensand filter.

To know more about Potassium permanganate please click on the link brainly.com/question/29526566

#SPJ4

2. In the equilibrium between carbonic acid, bicarbonate, and carbonate which
molecule(s) are favored at low pH?

Answers

There would be more of the bicarbonate ion present in the solution at low pH.

What specie is favored at low pH?

We know that the pH has to do with the degree of the acidity of the alkalinity of a given solution. We know that carbonic acid can be able to dissociate in solution via a reversible reaction.

In this case, when the pH is low, we know that there would now be more of the bicarbonate ion as the acid would  begin to dissociate so as to counter the constraint of the pH that has been imposed on the system.

Learn more about pH:https://brainly.com/question/15289741

#SPJ1

it takes 16.6 min for a 10.0 ml sample of an unknown as to effuse through a pinhole. a 10.0 ml sample of helium, he, required 5.00 min. what is the molecular weight of the unknown gas?

Answers

176.36g is the molecular weight of the unknown gas

At equal volumes, t2/t1= √M2 / √M1

Let the molecular mass of the unknown gas be x

16.6/5 = √x /4

√x = 16.4 × 4 / 5 = 13.28

x = 13.28*13.28

x = 176.36g

The entire mass of the atoms required to form a molecule per mole, expressed in grams, is what makes up the molar mass, also known as the molecular weight. Grams per mole are used to measure molar mass. The mass of 1 mole of a material, expressed in M grams, is its molecular weight, also known as its molar mass, abbreviated M. The mass of a given substance's molecules is its molecular weight. While molar mass and molecular weight have distinct definitions and measurement systems, their values are equivalent.

learn more about molecular weight/ mass here:

https://brainly.com/question/24727597

#SPJ4

consider two different isotopes of the same neutral element. which statements about these isotopes are true? (there may be more than one correct choice.)

Answers

The number of protons in each isotopes is the same. Because both isotopes have the same amount of orbital electrons, the claims made about them are accurate.

What does an element mean?

An element is a basic thing that is difficult to divide into smaller parts. A material that cannot be broken down by non-nuclear processes is referred to as an element in chemistry and physics. An element is a unique component of a bigger system or set in computers and mathematics.

What makes anything an element?

Any material that cannot be broken down into simpler compounds by regular chemical processes is a chemical element, often known as an element.

To know more about Elements visit:

https://brainly.com/question/13025901

#SPJ4

which of the following is not a ligand to the porphyrin ring fe(ii) ion in oxymyoglobin?

Answers

His E7 isn't a ligand for the porphyrin ring (Fe(II)) ion in oxymyoglobin.

In the porphyrin ring, four pyrrole nitrogens are bound to the a ferrous (Fe(II)) ion centre. The Fe(II) ion does have six coordination sites, four of which are inhabited by pyrrole nitrogen, one by proximal histidine, and the final site can form a reversible bond with an O2 molecule.

A porphyrin is a large ring molecule composed of four pyrroles, which are smaller rings with four carbons and one nitrogen. A series of single and double bonds connect these pyrrole molecules, causing the formation of a large ring. The technical term for four pyrroles linked together is tetrapyrrole. The ring is flat in space and has a fairly even electron distribution around in its circumference.

A porphyrin is thus categorized as an aromatic compound. This demonstrates how stable a porphyrin molecule is. Porphin is the general porphyrin model. This molecule appears as just an intermediate in nature only on rare occasions, but it serves as the foundation for all porphyrin molecules.

To know more about the Porphyrin ring, here

https://brainly.com/question/13057807

#SPJ4

Other Questions
an aqueous solution of potassium bromide, kbr, has a concentration of 4.60 mol/l and has a density of 1.37 g/ml. what are the mass percent and mole fraction of kbr in this solution? which is the best example of a temporal effect acting as a situational influence on the purchase decision? which country is credited with starting the tradition of a christmas tree? watch the video for the asnwers to this and the next 2 questions. solve g/4 + 11 = 28 g = For each question, fill in the letter from the following list which best describes the presentation of the item on the financial statements of Helton Corporation for 2021.a.Change in estimateb.Prior period adjustment (not due to change in principle)c.Retrospective type accounting change with note disclosured.None of these choices1.In 2021, the company changed its method of recognizing income from the completed-contract method to the percentage-of-completion method.abcd2.At the end of 2021, an audit revealed that the corporation's allowance for doubtful accounts was too large and should be reduced to 2%. When the audit was made in 2020, the allowance seemed appropriate.abcd3.Depreciation on a truck, acquired in 2018, was understated because the service life had been overestimated. The understatement had been made in order to show higher net income in 2019 and 2020.abcd4.The company switched from a LIFO to a FIFO inventory valuation method during the current year.abcd5.In the current year, the company decides to change from expensing certain costs to capitalizing these costs, due to a change in the period benefited.abcd6.During 2021, a long-term bond with a carrying value of $3,600,000 was retired at a cost of $4,100,000.abcd7.After negotiations with the IRS, income taxes for 2019 were established at $42,900. They were originally estimated to be $28,600.abcd8.In 2021, the company incurred interest expense of $29,000 on a 20-year bond issue.abcd9.In computing the depreciation in 2019 for equipment, an error was made which overstated income in that year $75,000. The error was discovered in 2021.abcd10.In 2021, the company changed its method of depreciating plant assets from the double-declining balance method to the straight-line method. A city wide soccer club has a phone tree to keep members informed of cancellations due to bad weather. At the first stage of the calling process, 2 leaders are informed. In stage 2, each person who was informed in stage 1 calls 3 players who are not informed. In stage 3, each person who was informed in stage 2 calls 3 players who are not informed. This pattern repeats and ends after stage 5. The number of players informed at each stage, P, is a function of the stage number X 1. a million kg asteroid is in the asteroid belt. a 50000 kg chunk of rock floats 400m away. what is the force of gravity between the two asteroids? Use the order of operations to find the value of the following expression.10 2 - 2 (8) + 111: 952: 153: 1554: 795 which religion historically believes in predestination rather that assure salvation through the acceptance of church match the major nerve with its associated plexus. 1. femoral nerve (click to select)2. tibial nerve (click to select)3. median nerve (click to select)4. common fibular (peroneal) nerve (click to select)5. axillary nerve (click to select)6. radial nerve (click to select)7. musculocutaneous nerve (click to select)8. ulnar nerve (click to select)9. obturator nerve (click to select) suppose that 256.0 j of heat is transferred by conduction from a heat reservoir at a temperature of 420.0 k Given (x 7)2 = 36, select the values of x. x = 13 x = 1 x = 29 x = 42 Hereditary hemochromatosis (HHC) is an iron storage disease that results in reduced uptake of iron into cells. Based on the data, which of the following is the most likely effect of HHC on ferritin protein levels?Reduced levels of ferritin protein because there is less iron in the cytosol of affected individuals _____________ , a fluid, functions to moisten food particles, begins digestion of carbohydrates, cleans the mouth and teeth, inhibits bacterial growth, dissolve molecules so they can stimulate the taste buds and bind particles together to aid in swallowing.Saliva Select the graph for the solution of the open sentence. Click until the correct graph appears.|x| + 1 < 3 An elderly man recently diagnosed with lung cancer is screened for a clinical trial using a new investigational drug. The investigator has carefully explained all of the required information about the study to the subject and the subjects daughter. The subject demonstrates his understanding and willingness to participate, but is not able to sign the informed consent document due to paralysis from a swimming accident years before. The subjects wife is his legally authorized representative, but she is out of town on a business trip. Which of the following is the most appropriate action to take for the investigator?a. The investigator can go ahead and treat the man without a signed consent since he verbally agreed to participate.b. Send a copy of the informed consent via facsimile to the subjects wife. After she has had the opportunity to speak to the investigator and her husband, she can sign the informed consent and fax it back.c. Exclude the man from the study.d. Request the IRB waive the requirement for a signed informed consent. which cuban-american actress has earned a worldwide gross surpassing $7 billion, making her the highest-grossing u.s. domestic box office actress? a presurgical client has reported a history of illicit amphetamine use. the nurse is concerned because of the effect this type of abuse has on what physiological functions? select all that apply. Which of the following best helps explain the trend of increasing atomic radius from N to Bi? A) The number of particles in the nucleus of the atom increases. Submit B The number of electrons in the outermost shell of the atom increases. The attractive force between the valence electrons and the nuclei of the atoms decreases. D The repulsive force between the valence electrons and the electrons in the inner shells decreases. Describe how soil salinization occurs. Propose a solution to prevent or remediate soil salinization. Identify one disadvantage of the solution you propose.