The concentration gradient acting on the red molecules would be stronger than on the blue molecules, but in a different direction.
Stronger than on blue molecules but in different direction because red molecules are having relatively higher density as compared to blue molecules because of 2 drops added. So the concentration gradient will be more and in opposite direction than blue.
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Student Exploration: Determining Density via Water Displacement
Directions: Follow the instructions to go through the simulation. Respond to the questions and
prompts in the orange boxes.
Vocabulary: Archimedes' principle, density, displacement, mass, volume
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
A ship floats by an iceberg as shown.
1. Based on the picture, which object is denser, the
iceberg or the ship?
2. How do you know?
1. Iceberg
2. The iceberg is more underwater than the ship.
Thanks to radar technology better crew training and iceberg monitoring systems, ship collisions with icebergs are generally avoidable, but when a collision does occur, the consequences can be devastating. These things are very rare. One of the rare but high-impact risks. The Titanic was neither the first nor the last ship to hit an iceberg and sink.
Here are the ten most sunk ships in the world in terms of lives lost due to iceberg accidents. A second study by British historian Tim Martin argued that atmospheric conditions on the night of the disaster may have caused a phenomenon called super refraction. This diffraction of light may have created a mirage or optical illusion that obscured the iceberg from the Titanic's vantage point.
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Okay thanks for the update on
First, we have to know the rules to recognize significant numbers:
Zeros between two non-zero digits ARE significant.
are
All non-zero numbers are significant.
Trailing zeros to the right of the decimal are significant.
Leading zeros are not significant.
Trailing zeros in a whole number with the decimal shown are significant.
Trailing zeros in a whole number with no decimal shown are not significant.
After these rules, we can say that 890 has only 2 significant numbers.
Answer: 2 significant digits
fill in the missing information: symbol atom or ion? check all that apply number of protons number of electrons sr neutral atom cation anion neutral atom cation anion 35 36 si neutral atom cation anion
1) This is an Anion
2) This is a Cation
3) It is Neutral.
Atom: A chemical element is uniquely defined by its atoms, which are tiny pieces of substance. An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present.
1) number of protons = 7
So, the atomic number = 7
N has an atomic number of 7.
charge = number of proton - number of electrons
= 7 - 10
= -3
So, this is an anion
symbol: N3-
atoms or ion: anion
number of protons = 7
number of electrons = 10
2) charge = +3
Pd has an atomic number of 46.
number of protons = 46
charge = number of proton - number of electrons
+3 = 46 - number of electron
number of electron = 43
since the charge is positive it is a cation
symbol: Pd3+
atoms or ion: cation
number of protons = 46
number of electrons = 43
3) number of protons is 28
So, the atomic number is 28
Ni has an atomic number of 28.
since it is neutral,
number of electron = number of proton = 28
symbol: Ni
atoms or ion: neutral atom
number of protons = 28
number of electrons = 28
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5. If you were making a metal pot for cooking, would you want a metal that transferred heat efficiently
or a metal that did not transfer heat efficiently?
Answer:
You would want a metal that transfered heat efficiently.
Explanation:
We use metal frying pans to cook our food because they conduct heat. They are conductors of heat, if it was not so, they could not be used for cooking food.
Hope this helps! :)
true or false Infrared wavelengths can carry heat and are used in communications
Answer:
false
Explanation:
can carry heat, not communication
ammonia reacts with oxygen according to the following equation. 4 nh3(g) 5 o2(g) equilibrium reaction arrow 4 no(g) 6 h2o(g) the enthalpy of reaction for this reaction is negative. identify two changes that could be made to the system to shift the equilibrium toward the products and two changes that could be made to shift the equilibrium toward the reactants. (select all that apply.) changes that would shift the equilibrium toward the products: increasing the volume of the system increasing the concentration of no or h2o decreasing the concentration of nh3 or o2 reducing the temperature of the system changes that would shift the equilibrium toward the reactants: increasing the volume of the system increasing the concentration of no or h2o decreasing the concentration of nh3 or o2 reducing the temperature of the system
Based on the number of particles involved and the enthalpy of the reaction, changes that would shift the equilibrium to the right would, according to Le Chatelier's principle, include increasing the volume of the system, reducing the pressure of the system, reducing the temperature of the system, increasing the concentration of ammonia and/or oxygen and reducing the concentration of NO and/or water. Changes in the opposite direction would cause the equilibrium to shift towards the reactants.
Upon increasing pressure or reducing volume, the equilibrium shifts in the direction that produces fewer gaseous particles. In this case, that's the reactants (9 molecules) and not the products (10 molecules). When considering temperature, it is useful to consider heat as one of the reaction components. When the enthalpy of the reaction is negative, heat is produced so it can be considered to be one of the products. Le Chatelier's principle states that upon changing one of the variables, the equilibrium will shift in the direction that counteracts the effects of the change. So, when reducing the temperature of the system, we are taking the heat out of the system, so equilibrium will shift to the products so that it can produce more heat, and vice versa. The same principle applies to the concentrations of ammonia, oxygen, water, and NO.
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Can someone describe what is the role of hemoglobin?
what intermolecular forces are present in pure samples of both ch₃ch₂ch₂f and ch₃ch₂ch₂oh? a) dispersion forces only. b) dipole-dipole forces only. c) dispersion forces, dipole-dipole forces, and hydrogen bonding. d) dispersion forces and dipole-dipole forces
Dispersion forces and dipole-dipole forces are present in pure samples of both ch₃ch₂ch₂f and ch₃ch₂ch₂oh.
What is Dispersion forces?The least attractive inter molecular forces are dispersion forces. Dispersion forces are responsible for the liquification of low molecular weight, non-polar molecules including hydrogen (H2), neon (Ne), and methane (CH4).It is crucial to think about the instantaneous distribution of electron density rather than the average distribution in order to visualize the source of dispersion forces.Molecules can be categorized as polar or nonpolar according to their polarity. In contrast to non-polar molecules, which have no charges at all on either side of the molecule, polar molecules have partial charges on both of their poles.To learn more about Dispersion forces Refer:
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using the actual moles of o2 you determined from your experiment (n) and the theoretical moles of o2 you just calculated, show your calculations from experiment 1: ideal gas law - finding percent h2o2 with yeast for determining the percent hydrogen peroxide in your experimental sample.
Theoretical mass (O₂)= H₂O₂ Volume× H₂O₂ density× {( 1 mol O₂)/(2 mol H2O2)}×{( mol of H₂O₂ /g H₂O₂ )}
H2O2 Volume= 5 ml
Known density( H₂O₂ )= 1.02 g/ml
Molar mass ( H₂O₂ )= 34.01 g/mol
Reciprocal molar mass( H₂O₂ )= 0.0294
Theoretical mass( O₂)= 5×1.02× 0.0294× 1/2= 0.0749 moles
Actual moles of O₂ and percentage of H₂O₂
P= 753 mm Hg×1 atm/760 mm Hg= 0.991 atm
V= 45 ml× 1L /1000 ml= 0.045 L
n= PV/RT
Actual moles ( O₂)= (0.991×0.045)/(0.0821×296 K)= 0.0445/24.3016= 1.8×10^-3 moles
Percentage ( H₂O₂ )= Theoretical moles(O₂)×100= 0.0749×100= 7.49%
Mass of H₂O₂ (percent)= 3%
Concentration by mass( H₂O₂ )= 3 gm H2O in 100 ml of H2O
Volume ( H₂O₂ )= 100 ml
1 mol ( H₂O₂ )= 34.02 g O2
(3g H₂O₂ /100 ml Solution)×( 1 mol H₂O₂ /34.02 g H2O2)
No. Of moles ( H₂O₂ )= 0.088 moles
Mass ( H₂O₂ )= 0.088 moles × 34.02 = 2.99 g
% H₂O₂ = (2.99 g H₂O₂ /100 ml Solution)×100= 2.99%
% error= (% H₂O₂ from the bottle-experiment % H₂O₂ )/(% H₂O₂ from bottle)×100
=[ (3-2.99)/(3) ]× 100= 0.34% error.
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Write the isotope notation for an atom that has 7 protons and 9 neutrons.
Answer:
N-16
Explanation:
Atom has 7 protons so it's atomic number is 7, which is Nitrogen
so isotope is 7 + 9 = 16
then it's N-16
Can someone tell me if this is correct please
No links please
Answer:
21.107
Explanation:
because this answer gives you 10 and also 90
Household bleach is approximately a 0.850 m solution of sodium hypochlorite (naocl). how many grams of naocl are present in a cup (~250. ml) of bleach?
There's approximately 15.8 g of NaOCl in a cup of bleach. To calculate this we need to use the molarity of the bleach solution and the molar mass of sodium hypochlorite.
In order to convert the molarity to mass, we need the molar mass of sodium hypochlorite. We can calculate it by adding up the relative atomic masses of sodium (23), oxygen (16), and chlorine (35.5):
M (NaOCl) = (23 + 16 + 35.5) g/mol = 74.5 g/mol
Now we calculate the amount (in moles) of sodium hypochlorite present in 250 mL (0.25 L) of bleach:
c = n/V ⇒ n = c*V = 0.850 M * 0.250 L = 0.2125 mol of NaOCl
Using the molar mass, we can now calculate the mass required:
n = m/M ⇒ m = n*M = 0.2125 mol * 74.5 g/mol = 15.8 g of NaOCl
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Vinegar or acetic acid has the formula CH3COOH. Based on its structure what kind of intermolecular forces would you expect in this compound?
Vinegar or acetic acid(CH3COOH) has intermolecular forces of hydrogen bonding, dipole-dipole interactions and dispersion force.
What are intermolecular forces?Intermolecular forces can be defined as the attractive and repulsive forces that arise between the molecules of a substance.
Intermolecular forces includes the electromagnetic forces of attraction or repulsion which act between atoms and other types of its close particles such as atoms or ions.
Vinegar or acetic acid(CH3COOH) has intermolecular forces of hydrogen bonding, dipole-dipole interactions and dispersion force.
Vinegar or acetic acid(CH3COOH) has an especially strong type of hydrogen bonding. In solid state, the molecules in the acetic acid form cyclic pairs connected by hydrogen bonds. Thus, making it to have a low volatility.
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PLSS HELP I NEED THIS ASAP!
The correctly identified subatomic particle with its charge is
Proton - Positive, Neutron -Neutral, Electron - Negative What is a neutron ?The British physicist James Chadwick made the neutron discovery in 1932.
Neutrons are neutral subatomic particles that are a part of every atomic nucleus, except the exception of regular hydrogen. Its rest mass of 1.67927980 10-27 Kg is slightly larger than a proton but 1838.68 times greater than an electron. It has no electricity charge. The dense inner core of the atom is where protons and neutrons, collectively referred to as nucleons, are linked together and account for 99.9% of the mass of the atom.
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Explain the difference between an ionic and covalent bond: question 1 options: covalent bonding produces electron transfer causing the atoms to become ions (cations and anions). ionic bonding allows atoms to share electrons. covalent bonding allows atoms to share electrons. ionic bonding produces electron transfer causing the atoms to become ions (cations and anions). oppositely charged atoms form ions and are attracted to each other. this can be either an ionic or covalent bond.
The difference between covalent and ionic bonds is that covalent bonding allows atoms to share electrons, but ionic bonding cause electron transfer, leading the atoms to form ions (cations and anions), and these oppositely charged ions are attracted to each other.
Atoms combine to create compounds in order to complete their octet and to achieve stability. This can be done by combining with other atoms either by electron sharing or electron transfer from one atom to another. Therefore, covalent bonds are created when electrons are shared, whereas ionic bonds are created when electrons are transferred.
Ionic bonds are generally formed between metal and nonmetal atoms. Non-metallic atoms gain electrons to form a negatively charged ion, while metallic atoms lose electrons to form positively charged ions. An atom becomes a cation when one or more of its electrons are lost, while an atom forms an anion when one or more electrons are gained. Hence, an ionic bond is formed as a result of the electrostatic attraction between oppositely charged ions.
A covalent bond, on the other hand, is formed between non-metal atoms as a result of electron sharing.
Therefore, an ionic bond is an attraction between ions with opposite charges whereas a covalent bond is the sharing of electrons between atoms.
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Plss answer and I will give the brainliest.
If a typical aluminum beverage can weighs 13.5 grams, how much alum could you produce for every 210 cans collected. Show your work, based on your own experiment.
The following is what I got from my experiment.
- mass of aluminum can: 0.4996 grams
- mass of alum produced:- 5.183 grams
Molar mass of aluminum: 26.98 grams
The alum produced during experiment for every 210 can is 38.21 kg
What is experiment?Experiment can be defined as a technique used to establish or refute a hypothesis, or to determine the efficacy or likelihood of anything new.
It can also be defined as a series of acts and observations carried out in the context of attempting to solve a specific problem or question.
According to your experiment 0.4996 gram of aluminum will produce 5.183 grams of alum.
Mass of 1 aluminum can = 13.5 g
Mass of 210 can = 13.5 x 210 = 2835g
Mass of alum produced by one gram of aluminum = 13.48 g
Mass of alum produced by 2835 g = 13.48 x 2835
= 38.21 kg
The amount of alum produced by 210 can = 38.21 kg
Thus, the alum produced during experiment for every 210 can is 38.21 kg
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butane, c 4h {10}, reacts with o 2 to produce co 2 and h 2o. what volume of co 2 at 25 °c and 0.922 atm is produced from the reaction of 14.0 g of c 4h {10} with excess o 2? (r
Using ideal gas laws and the balanced reaction equation for the combustion of butane, we can calculate that the volume of produced carbon dioxide will be 25.6 L.
The balanced reaction equation for butane combustion looks like this:
[tex]2C_{4} H_{10} + 13O_{2}[/tex] → [tex]8CO_{2}+10H_{2} O[/tex]
We can see that 2 moles of butane (M = 58 g/mol) produce 8 moles of carbon dioxide. This allows us to set up a proportion that we can use to calculate the amount of carbon dioxide produced by the combustion of 14.0 g of butane:
116 g of butane : 8 moles of carbon dioxide = 14.0 g of butane : X
X = 8 moles of carbon dioxide * 14.0 g / 116 g = 0.9655 mol of carbon dioxide
Now, using the ideal gas laws, we can calculate the volume of released carbon dioxide.
PV = nRT ⇒ V = nRT/P = 0.9655 mol * 0.08206 Latm/Kmol * (25 + 273) K / 0.922 atm = 25.6 L
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a model train moves 18.3 m in 122 s. what is the train's average speed?
Given:
displacement(x)=18.3m
time(t)=122s
Average speed(v)=x/t
=18.3/122
=0.15m/s
Therefore,the train's average speed=0.15m/s
measurements of zircon crystals containing trace amounts of uranium from a specimen of granite yield parent/daughter ratios of 25 percent parent (uranium-235) and 75 percent daughter (lead-206). the half-life of uranium-235 is 704 million years. how old is the granite?
The age of the granite given it contains 25% parent (uranium-235) and 75% daughter (lead-206) is 1408 million years
We'll begin by calculating the number of half lives that has elapsed. This can be obtained as follow:
Original amount (N₀) = 100%Amount remaining (N) = 25%Number of half-lives (n) =?2ⁿ = N₀ / N
2ⁿ = 100 / 25
2ⁿ = 4
2ⁿ = 2²
n = 2
How to determine the age of the graniteThe age of the granite can be obtained as follow:
Half-life (t½) = 704 million years.Number of half-lives (n) = 2 Age (t) =?n = t / t½
Cross multiply
t = n × t½
t = 2 × 704
t = 1408 million years
From the calculations made above, we can conclude that the age of the granite is 1408 million years
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HELP QUICK PLEASE
The table shows the number of charged particles in an ion.
Charged Particles
Charge on Particle Number of Particles
Positive
Negative
3
2
A negatively charged substance is brought near the ion. What will most likely happen and why?
O a
Ob
Oc
Od
The ion will repel the substance because the ion has more electrons than protons.
The ion will repel the substance because the ion has more protons than electrons.
The ion will attract the substance because the ion has more electrons than protons.
The ion will attract the substance because the ion has more protons than electrons.
Going by the remnant charge, if a negatively charged substance is brought near the ion, an attraction will take place. The ion will attract the substance because the ion has more protons than electrons.
Attraction and repulsion of ionsAccording to established law, substances with like charges repel one another while those with unlike charges tend to attract.
Considering the ion in question, there are 3 positive and 2 negative charges. This means that the ion has one remnant positive charge. In other words, the ion has more protons than electrons.
If a substance that is negatively charged is brought near the ion, an attraction will take place. This is because both the ion and the substance have unlike charges.
In summary, there will be an attraction between the ion and the substance because the ion has more protons (positive charges) than electrons (negative charges).
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Answer:
The ion will repel the substance because the ion has more protons than electrons.
Explanation:
Because the ion has more protons than electrons the ion will repel the substance :)
What is this element
1s2 2s2 2p6 3s2 3p2
has 4 valence electrons
Answer:
Silicone
Explanation:
Silicone matches all the things
A student is investigating the percentage purity of ibuprofen in a sample of tablets. 6.00 g of a sample of impure ibuprofen tablets was crushed and dissolved in 200 cm³ of 0.200 mol dm-³ aqueous sodium hydroxide.
25.0 cm³ of this solution was withdrawn and titrated against hydrochloric acid. The unreacted NaOH in this solution required 24.40 cm³ of 0.120 mol dm of hydrochloric acid for complete neutralisation.
i) Calculate the amount of sodium hydroxide that has reacted with hydrochloric acid. (ans: 0.002928mol)
ii) Calculate the amount of sodium hydroxide unreacted in 200 cm³ solution.
(ans: 0.002928 x (200/25.0) = 0.0234mol)
I KNOW HOW TO DO PART i. PLEASE EXPLAIN HOW TO GET THE ANSWER FOR PART ii WITH THE GIVEN SOLUTION thank you
Based on the mole ratio of the reaction and the volume of the reactants used;
Amount in moles of hydroxide that has reacted with hydrochloric acid is 0.002928 molesAmount in moles of sodium hydroxide unreacted in 200 cm³ solution is 0.0234 moles.What is the amount of sodium hydroxide that reacted with hydrochloric acid?The amount of sodium hydroxide that reacted with hydrochloric acid is calculated from the mole ratio of the reaction between hydrochloric acid and sodium hydroxide.
The equation of the reaction is given as follows:
HCl (aq) + NaOH (aq) ---> NaCl + H₂O
The mole ratio of HCl and NaOH is 1 : 1
Moles of HCl in 24.40 cm³ of 0.120 mol dm of hydrochloric acid solution will be determined as follows:
Moles = molarity * volume in LitersMoles of HCl = 0.120 * 24.40 / 1000
Moles of HCl = 0.002928 moles
Thus moles of NaOH reacted = 0.002928 moles
The amount of sodium hydroxide unreacted in 200 cm³ solution is determined as follows:
Moles of sodium hydroxide unreacted in 25 cm³ solution = 0.002928 moles
Moles of sodium hydroxide unreacted in 200 cm³ solution = 0.002928 moles * 250 / 25
Moles of sodium hydroxide unreacted in 200 cm³ solution = 0.0234 moles.
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a pure sample of a new chemical compound was analyzed and was found to have the following mass percentages: al 31.5 %; o 56.1 %; s 12.4 %. which of these could be the empirical formula of the compound?
Answer: supercalifragilisticexpialidocuos
Explanation:
How can the number of electrons be predicted in a neutral atom? _________________________________________________________________________ _________________________________________________________________________
The number of electrons can be predicted in a neutral atom because the number of protons and electrons in a neutral atom will be identical, we can readily calculate the electron number from the atomic number.
What can be used to predict the number of electrons?An atom's atomic number can be used to forecast its electrical structure. The atomic number can be used to forecast the total number of electrons because neutral atoms have an equal number of protons and electrons.
So, If you know what group the atom's element belongs to and the group number correlates to the number of electrons on the valence shell and you can determine how many atoms are on the atom's valence shell.
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Consider the following reaction
2H20 — 2H2 + 02
The rate of production of O2 is 3.9 x 10-¹ mols/s. How many seconds will it take to decompose 175g H20
Answer:
The chemical reaction 2H2+O2→2H2O 2 H 2 + O 2 → 2 H 2 O is classified as a synthesis reaction.
Explanation:
You discover a piece of jewelry that you think might be made of silver. You place the item on a balance and determine that it has a mass of 12.2 grams. It displaces 1.9 cm 3 of water when placed in a graduated cylinder. Is this item made of pure silver? Show your work.
No, this item is not made of pure silver because if it has been made from pure silver that it would have displaced only 1.16cm³ of water but due to the addition of some other low-density element it displaces 1.9cm³ of water.
For pure silver
density of pure silver is = 10.49 g/cm³
mass of silver = 12.2 gram
since, density = mass/volume
volume = mass/density
= 12.2/10.49 cm³
= 1.16 cm³
But the actual displaced water is 1.9cm³, which means some other element of lower density has been added.
Therefore, it is clear that the given jewelry is not made of pure silver.
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describe, step-by-step, how will you prepare 10 ml of 0.050 m hcl from a 0.10 m solution of hci? assume that you use a 100-ml graduated cylinder (in which volumes can be read to the nearest 0.1 ml).
Taking into account the definition of dilution, you would take 5 mL of the 0.10 M solution of HCl and you have to add 5 mL of deionized water.
DilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution. In this way, dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeProcess in this caseIn this case, you know:
Ci= 0.10 MVi= ?Cf= 0.050 MVf= 10 mLReplacing in the definition of dilution:
0.10 M× Vi= 0.050 M× 10 mL
Solving:
Vi= (0.050 M× 10 mL)÷ 0.10 M
Vi= 5 mL
Finally, this means that you would take 5 mL of the 0.10 M solution of HCl. If you need to prepare 10 ml of 0.050 M, you have to add 5 mL of deionized water.
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• 1.0g of hydrogen reacts Completely with 19.0g of florine.
What is the percent by mass of hydrogen in the Compound
that is formed?
The percentage by mass of hydrogen in the Compound that is formed is found to be 5% if 1.0g of hydrogen reacts Completely with 19.0g of fluorine.
Mass PercentA component in a particular combination or a concentration can be described using the mass percent symbol. The mass of solute contained in a specific mass of solution is indicated by the mass percentage used to characterize the solution composition. The concentration of the solute is expressed in terms of mass or moles.
What does “% by mass” mean?As a mass percentage, an element's concentration in a compound or component of a combination can be represented. The mass percentage is calculated by multiplying the result by 100% after dividing the combined mass by the masses of each component. Also called Mass Percent or (w/w) Percent.
[tex]\frac{1}{2} H_{2} + \frac{1}{2} F_{2}[/tex] →[tex]HF[/tex]
Percentage by mass hydrogen
= (Mass of hydrogen) / (Mass of Hydrogen fluoride) x 100%
= [tex]\frac{1}{20}[/tex] x 100%
=5%
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The electron configuration of an element is 1s22s22p6. Describe what most likely happens when an atom of this element comes near an atom having seven valence electrons.
A single electron from the outermost shell of this element moves to the outermost shell of an atom with seven electrons.
When forming ions elements typically gain or lose the minimum number of electrons required to make a complete octet. For example, fluorine has 7 valence electrons, so it is most likely to gain an electron and form an ion of charge At the outermost energy level he states 8 electrons must be reached for an atom to be stable. Particles smaller than an atom.
Ionization is the process by which ions are formed by gaining or losing electrons from atoms or molecules. When an atom or molecule receives an electron it becomes a negatively charged anion and when it loses an electron it becomes a positively charged cation. Energy can be lost or gained in the formation of ions.
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write balanced equations for each of the following by insert- ing the correct coefficients in the blanks: (a) cu(no3)2(aq) koh(aq) ⟶ cu(oh)2(s) kno3(aq) (b) bc13(g) h2o(l) ⟶ h3(bo3(s) hc1(g) (c) casio3(s) hf(g) ⟶ sif4(g) caf2(s) h2o(l) (d) (cn)2(g) h2o(l) ⟶ h2c2o4(aq) nh3(g
The balanced reaction equations are given below. They are all examples of double displacement.
a) balanced reaction equation of the reaction between aqueous copper(II) nitrate and aqueous potassium hydroxide, resulting in the formation of solid copper(II) hydroxide and aqueous potassium nitrate
[tex]Cu(NO_{3} )_{2}(aq)+2KOH(aq)[/tex] → [tex]Cu(OH)_{2} (s) + 2KNO_{3}(aq)[/tex]
b) balanced reaction equation of the double displacement between gaseous boron cyanide and liquid water resulting in the formation of solid boric acid and gaseous hydrogen cyanide
[tex]2B(CN)_{3} (g) + 6H_{2} O[/tex] → [tex]2H_{3} BO_{3} (s)+6HCN(g)[/tex]
c) balanced reaction equation between solid calcium silicate and gaseous hydrogen fluoride resulting in the formation of gaseous silicon fluoride, solid calcium fluoride and liquid water
[tex]CaSiO_{3}(s) + 6HF (g)[/tex] → [tex]SiF_{4}(g)+CaF_{2}(s)+3H_{2}O(l)[/tex]
d) balanced reaction equation between cyanogen gas and liquid water resulting in formation of aqueous oxalic acid and gaseous ammonia
[tex](CN)_{2}(g) + 4H_{2} O (l)[/tex] → [tex]H_{2} C_{2} O_{4} (aq) +2NH_{3} (g)[/tex]
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