For the following reaction in aqueous solution, identify all those species that will be spectator ions. Na2S04+Hg2(N0,)2 rightarrow Hg2S04 + 2NaN0,

Electrons in the 1s subshell are much closer to the nucleus in Argon than in Helium due to the larger in nuclear charge in Ar.

The energy of an electron in a multi-electron atom depends on both its principal quantum number (shell) and its azimuthal quantum number (subshell). In a given principal quantum number, the energies of the orbitals increase in the order s<p<d<f. But for higher energy levels there is a difference in the energies of the orbitals and it will not follow the above order.

Effective nuclear charge is the net charge experienced by an outer shell electron in an atom while nuclear charge is the total charge of the nucleus. While the effective nuclear charge is determined by considering the influence of the internal orbital electrons and the nuclear charge, the nuclear charge is independent of the electron charge in the atom. The effective nuclear charge depends not only on the number of protons in the nucleus while the nuclear charge depends only on the number of protons present in the nucleus.

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Answer: Should be conduction (for the explanation bit it's below)

technically its both conduction and convection but if its one answer only then conduction should be right

explain your answer bit:
I think it is conduction because the heat in the environment is being transferred into the ice, which is warming it up until it reaches thermal equilibrium and then eventually evaporates.


hope this helps!

The correct order for the amino acids is:

d. methionine

a. leucine

b. histidine

c. glycine

This order is determined by the sequence of nucleotides in the mRNA molecule, which is transcribed from the DNA template. The sequence of nucleotides in the mRNA molecule determines the sequence of amino acids in the protein that is synthesized during translation. The process of translation begins with the recruitment of a ribosome to the mRNA molecule, and the addition of a special amino acid called methionine to the growing protein chain. The ribosome then moves along the mRNA molecule, adding one amino acid at a time to the growing protein chain, in a sequence determined by the sequence of nucleotides in the mRNA molecule. In this case, the first amino acid added to the protein chain is methionine, followed by leucine, histidine, and glycine.

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The correct order for the amino acids is:

d. methionine

a. leucine

b. histidine

c. glycine

This order is determined by the sequence of nucleotides in the mRNA molecule, which is transcribed from the DNA template. The sequence of nucleotides in the mRNA molecule determines the sequence of amino acids in the protein that is synthesized during translation. The process of translation begins with the recruitment of a ribosome to the mRNA molecule, and the addition of a special amino acid called methionine to the growing protein chain. The ribosome then moves along the mRNA molecule, adding one amino acid at a time to the growing protein chain, in a sequence determined by the sequence of nucleotides in the mRNA molecule. In this case, the first amino acid added to the protein chain is methionine, followed by leucine, histidine, and glycine.

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Answer:

c

Explanation:latitude,longitude

The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore,  the concentration of the phosphoric acid is 0.217M.

Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.

Mathematically,

According to the neutralization law,

M₁V₁=M₂V₂

where,

M₁ = molarity of stock solution = 0.5 mol/L

V₁ = volume of stock solution =  55.5 mL

M₂ = molarity of dilute solution =?

V₂ = volume of dilute solution = 127.5 mL

substituting all the given values we get

M₁V₁=M₂V₂

0.5 ×55.5 =M×127.5

M=0.217M

Therefore,  the concentration of the phosphoric acid is 0.217M.

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2.00 × 10⁻³ g grams of na2co3 are required to react with 0.0118 moles of cocl2.6h2o

Explanation:

Write the balanced decomposition reaction in step one.

2 NaHCO3 = Na2CO3, CO2, and H2O

Step 2: Determine the moles needed to equal 0.0118 g of Na2CO3.

Na2CO3 has a molar mass of 105.99 g/mol.

1.11 104 mol is equal to 0.0118 g 1 mol/105.99 g.

Step 3: Determine how many moles of H2O were created by using 1.11 104 moles of Na2CO3.

Na2CO3 and water have a molar ratio of 1:1. There are 1.11 x 104 moles of H2O created from 1 mole of water.

Step 4: Determine the mass equal to 1.11 104 moles of water.

H2O has a molar mass of 18.02 g/mol.

18.02 g/mol divided by 1.11 104 mol yields 2.00 103 g.

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The lewis acid in the following reaction: hg2+(aq)+4cn−(aq)⇌hg(cn)42−(aq) will be hg2+.

A chemical species known as a Lewis acid has an empty orbital that could also accept a pair of electrons from a Lewis base to produce a Lewis adduct.

The given equation is :

hg2+(aq)+4cn−(aq)⇌hg(cn)42−(aq)

In the above equation, hg2+ will be work as Lewis acid. Any acid that serves as an electron pair acceptor would be a Lewis acid. Any base that can donate an electron pair would be a Lewis base.

A species known as Lewis Acid will have unoccupied orbitals as well as it will receive an electron pair, making it an electrophile. In the available possibilities, hg2+ possesses an empty orbital that can receive an electron lone pair and is a potent electrophile. It is therefore a Lewis acid. The remaining three molecules, cn− are Lewis bases since they only have one electron.

Therefore, the Lewis acid will be hg2+.

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A strong push would mean a large magnitude of force and vice versa a weak push would mean a small magnitude.

The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J

Energy is a sort of heat. Heat changes the condition of a substance when it is absorbed by it by weakening and rupturing the inter-particle bonds (solid to liquid for example). A phase change brought on by heat is NOT enough to raise the temperature. A reaction that absorbs heat is called endothermic.

The bulk of the body affects how much heat is absorbed. The bulk of the body directly affects how much heat energy is absorbed. where M is the body's mass and Q is the quantity of heat absorbed.

Using the equation H=cpmT and the water specific heat, the amount of heat absorbed is computed.

Given,

heat of slid platinum = 0.133

150 -100=50

heat absorbed = 0.133*10*50

= 66.5 J

Therefore , The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J

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The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, the Molarity of a solution that contains 0.5 mol of calcium acetate per 1.0 L of solution is 0.5 M.

Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.

Mathematically,

Mathematically,

Molarity= number of moles of solute/volume of solution in litre

Where,

moles= 0.5 mol

Volume=1.0 L

Substituting values in above equation, we get

Molarity= 0.5 mol /1.0 L

             =0.5 M

Therefore, the Molarity of a solution that contains 0.5 mol of calcium acetate per 1.0 L of solution is 0.5 M.

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In thermal equilibrium, the probability of an atom being in a particular state is determined by its statistical weight, which is determined by its energy.

At a given temperature, the statistical weight of a state is proportional to its Boltzmann factor, which is the exponential of the negative of the energy of the state divided by the temperature of the system. Therefore, the ratio of the probabilities of two states of an atom that are separated in energy by kt will be determined by the Boltzmann factors of those states. In general, the probability of a state with a lower energy will be higher than the probability of a state with a higher energy, because the Boltzmann factor is an exponential function that decreases as the energy increases.

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It takes 5.0 litres of a 0.2 M HCl solution. In this instance, 5.0 litres of solution would yield 1.0 mole of HCl. For a 0.2N solution, 8.0 grammes of NaOH per litre of water would be needed.

To HCl achieve the most accurate preparation, make sure your powder is dry and limit its exposure to the air during usage, especially during storage. NaOH adsorbs mole water quickly (with heat generation). Therefore, you will need to weigh 10/5 = 2 g of pure NaOH to create 200 ml of 0.25 N. You must dissolve 40.00 g of sodium hydroxide pellets in 250 ml solution of distilled water to create 1MNaOH solution, and you must then dilute the solution to 1 litre.

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A calcium ion will have a positive charge when it loses an electron. If it loses 2 electrons, the calcium ion will have 18 electrons and a 2+ charge.

In order to meet its octet rule on what would eventually become the new valence shell, the calcium atom, which currently has two valence electrons, must lose both of them. Consequently, it has a 2+ charge. Calcium contains 20 protons but only 18 electrons since it lost two electrons. As a result, calcium has a charge of 2+, making it a positive ion. With 20 protons and 20 electrons, a neutral calcium atom easily loses two electrons. A cation with 20 protons, 18 electrons, and a 2+ charge is the consequence of this. It is represented by the formula Ca2+ and has the same number of electrons as atoms of argon, the previous noble gas.

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The arrangement of this isoelectronic series in order of decreasing radius will be as O⁻², F⁻, Na⁺, Mg⁺²

The total number of electrons in each of these elements is 10, although the number of protons in each differs.

O⁻² = 8 protons

F⁻ = 9 protons

Na⁺ = 11 protons

Mg⁺² = 12 protons

Therefore, we can observe that the highest amount of protons in Mg⁺² are attracting the same quantity of electrons, and as a result, this ion has the shortest radius. (since there is a strong attraction force, the radius decreases).

O⁻² has the biggest radius because the fewest number of protons attract the same number of electrons.

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This reaction decomposes 31.86 g of ch3oh at constant pressure, transferring 250 KJ of heat, as stated below.

The front and rear regions together make up the genuine contact area, and the contact pressure is the ratio of the typical load to this total. Only in the case of plastic contact may it be referred to as the scratch hardness.

Think about the following response:

2CH3OH(g)→2CH4(g)+O2(g)ΔH=+252.8kJ

Determine the amount of heat that is transmitted when this reaction, which occurs at constant pressure, breaks down 31.860g of CH3OH(g).

31.86 g CH3OH(g) (1 mol/ 32.05 g) = 0.99 mol CH3OH(g) +252.8 kJ

Q = 0.99 mol (252.8 kJ) = 250 kJ

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No, reaction does not occur when aqueous solutions of silver(i) acetate and ammonium carbonate are combined.

What is an aqueous solution?

Aqueous solutions are made up of water and one or more dissolved materials. Solids, gases, or other liquids can all dissolve in an aqueous solution.

Silver (I) acetate has moderate solubility in water,  hence it it does not form precipitate on mixing with ammonium acetate.

Therefore, reaction does not occur when aqueous solutions of silver(i) acetate and ammonium carbonate are combined.

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Option B, Because only a tiny percentage isotopes of oxygen atoms contain two additional neutrons, giving them an atomic weight of 18, "heavy" oxygen is distinguished from regular oxygen by the term.

Normal oxygen has 8 protons and, in its most prevalent form, 8 neutrons, giving it an atomic weight of 16; this type of oxygen is referred to as "light" oxygen. The isotopes amount of neutrons in the nuclei of oxygen-16 and oxygen-18 are different. While isotopes oxygen-18 contains 10 neutrons, oxygen-16 only has 8. Protons and electrons are equal between isotopes  oxygen-16 and oxygen-18. Since protons and neutrons both have mass, the mass of oxygen isotopes may be altered by altering the neutron content.

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The total pressure of the mixture is 359.5 torr, that is calculated by using ideal gas equation.

Volume of N2, V1=4.0 L

Pressure of N2, P1=450 Torr=450/760 atm

Thus, number of moles of N2, n1= P1V1/RT

=(450/760)*4/0.082*338

=0.085 mol

Similarly,

Volume of O2, V2=3.5 L

Pressure of O2, P2=252 Torr=252/760 atm

Thus, number of moles of O2, n2= P2V2/RT

=(252/760)*3.5/0.082*338

=0.042 mol

Similarly,

Volume of CO2, V3=0.21 L

Pressure of CO2, P3=150 Torr=150/760 atm

Thus, number of moles of CO2, n3= P3V3/RT

=(2150/760)*30.21/0.082*338

=0.001 mol

Total number of moles = n1+n2+n3

=(0.085+0.042+0.21)

=0.128 mol

Total volume, V=7.5 L

Using, ideal gas law

Thus, total pressure, P=nRT/V

=0.128*0.082*338/7.5 atm

=0.473 atm

=0.473*760

=359.5 torr

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T-Pentyl Chloride has a density of.8420 g/mL. T-pentyl chloride will float because it has a lower density than water, which has a density of 1.0 g/mL.

Since 2 chloro 2 methyl butane has a lower density than water, it cannot dissolve in water, leading to the formation of organic layers.The solvent 2-Chloro-2-methylbutane is used to synthesize pentane as well as other chemicals. It serves as a catalyst and a petrochemical additive when employed in organic synthesis. Originally, this Alfa Aesar product was sold under the Thermo Scientific name. The heritage brand may be mentioned in some documents and label information. On the basis of quantum chemical calculations, exact estimates of the (IR) spectra for 2-Chloro-2-methylbutane have been made and are available for purchase.

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The change in momentum of the smaller object is smaller than the change in momentum of the larger mass, but not zero.

In most cases, momentum is the quantity that describes the internal motion of any moving object. Force, on the other hand, is the quantity that modifies the rate is taken existing when applied to any object. Momentum is the sum of motion contained within a moving item.

Since there are no outside forces in an external observer (like the universe), momentum is always preserved. The components of momentum in any directions will also be maintained because momentum is conserved. When solving collision-related issues, the principle of momentum conservation is crucial.

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The deuterium oxide) has a self-ionization constant of 8.9 x 10-16 at 20 OC. Calculate [Dt] and [OD -] for neutral D2O at this temperature is 2.98⋅10−8.

D.+]=[outer diameter − ]=2.98⋅10 −8 M.

step 1

1/2 K_w = 8.9 \cdot 10^{-16}Kw na =8.9⋅10 −16

Let's calculate [D^+][D].+] and [OD^-][OD−].

for pure deuterium oxide.

[D^+] = [OD^-][D +]=[outer diameter −] with this

\begin{align*} K_w &= [D^+] \cdot [OD^-]\\ [D^+] &= [OD^-] = \sqrt {K_w}\\ &= \sqrt {8.9 \ cdot 10^{-16}}\\ &= {\color{#4257b2}2.98 \cdot 10^{-8} \mathrm{M}} \end{align*}.

K.wna [D + ] na =[D+]⋅[OD −] =[outer diameter−]=K.w na na = 8.9⋅10 −16 na =2.98⋅10−8 M.na.

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Wavelength of the photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm) that was absorbed initially is 400nm

Wavelength of the photon that was absorbed initially can be calculated as follows:

Photon's energy is inversely related to its wavelength.

E ∝ 1/λA

Given that the energy of the absorbed photon () equals the total energy of the photons released (E₁ +E₂).

Eₐ=E₁ +E₂

the relationship between E and λ,

1 =   1 + 1

λₐ    λ₁   λ₂

1 =          1        +       1      

λₐ    600x 10⁻⁹    1200x 10⁻⁹

λₐ = 400nm

Therefore, the wavelength of the absorbed photon is 400 nm.

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The pH during the titration 20.0 mL OF 0.1000 M NaOH(aq) with 0.1000 M  HCOOH(aq) of after 8.68 mL of the base is added is  3.074

The pH of the titration can be  calculate as follows;

First we should calculate the number of moles,

moles of NaOH = 0.1000 M * 20.00 mL = 2.0 mmol

of moles of HCOOH = 0.1000 M * 8.68 mL =  0.868 mmol

Then we can calculate concentration of excess acid

concentration of excess acid = [(moles acid - molesbase]/V tota

concentration of excess acid = [(2.0 mmol-  0.868 mmol)/(28.68 mL)

concentration of excess acid = 3.94 x 10⁻³ M.

the we can calculate the pH

For weak acids;

[H⁺] = √Ka.C = √(1.8 x 10⁻⁴)(3.94 x 10⁻³ M) = 8.42 x 10⁻⁴ M.

pH = - log[H⁺].

pH = - log( 8.42 x 10⁻⁴ ) = 3.074

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Difference between empirical and molecular formula :

Empirical formulas are the simplest form of formulas that we can write for a molecule while molecular formulas are the formulas showing the type of atoms and number of each atom connected in the molecule. Hence, the key difference between empirical and molecular formulas is that empirical formula only gives the simplest ratio of atom whereas molecular formula gives the exact number of each atom in a molecule. Furthermore, we cannot calculate the exact molecular mass using the empirical formula while we can get the exact molecular mass using the molecular formula.

As another important difference between empirical and molecular formulas, we can say that we can predict the type of atoms in ionic compounds and repeating unit in a polymer whereas we can predict the oxidation numbers of each atom, how they are going to react in a reaction, and the resulted products using molecular formulas.

Determination: To determine the empirical and molecular formulas, given the mass or percentage of the elements, you need to convert them to moles. This is because, remember, the formula of a compound tells us how many moles of each element there are in one mole of that compound.

What do you mean by empirical and molecular formula?

The empirical formula of a compound gives the simplest ratio of the number of different atoms present, whereas the molecular formula gives the actual number of each different atom present in a molecule. If the formula is simplified then it is an empirical formula. The molecular formula is commonly used and is a multiple of the empirical formula.

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The empirical formula for glucose is C6H12O6, while the molecular formula is C6H12O6.

What is molecular formula?

Molecular formula is a way of representing the chemical composition of a molecule by using chemical symbols and numerical subscripts. It is a notation consisting of the chemical element symbols and numbers that indicate the types and numbers of atoms present in a molecule. The subscripts are used to indicate the number of each type of atom present in the molecule. The molecular formula can provide important information about the structure, properties, reactivity, and other characteristics of a molecule.

The difference between empirical and molecular formulas is that the empirical formula is the simplest ratio of atoms that make up a compound, while the molecular formula is the actual number of atoms of each element that make up the compound. For example, the empirical formula for glucose is C6H12O6, while the molecular formula is C6H12O6.

To determine the empirical and molecular formulas from percent composition or mass spectrometry data, one must first calculate the moles of each element present in the compound. This is done by dividing the percent composition of each element by the molar mass of that element. Once the moles of each element present in the compound is determined, the empirical formula is calculated by dividing the moles of each element by the smallest number of moles of any element in the compound. The molecular formula can then be determined by multiplying the empirical formula by a whole number until the total number of atoms of each element in the compound is equal to the moles of each element present in the compound.

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Answer:

Experiments with gases that first became possible at the turn of the nineteenth century led John Dalton in 1803 to propose a modern theory of the atom based on the following assumptions. 1. Matter is made up of atoms that are indivisible and indestructible.

I held the magnesium ribbon over the flame produced by the bunsen burner using a pair of tongs.

molar solubility of PbBr2 in 0. 500 M KBr solution is 4S3 = 6.60 x 10–6 . PbBr2 ionizes as Pb2+ + 2Br-, molar solubility of PbBr2 in a 0. 500 M Pb(NO3)2 solution is 0.0181 moles/lit..

If molar solubility of PbBr2 is “S”, then solubility of Pb2+ is also “S” but that of Br- would be “2S”. Ksp = [Pb2+] [Br-]2 = (S) (2S)2 = 4S3 = 6.60 x 10–6 4S3 = 6.6 x 10–6,this gives Solubility S = 1.181 x 10–2 = 0.0181 moles/lit. solid's solubility (usually referred to as its molar solubility) is expressed as the concentration of the "dissolved solid" in a saturated solution. This would simply be the concentration of Ag+ or Cl- in the saturated solution for a simple 1:1 solid like AgCl. The other way to express solubility is through molar solubility, which is defined below. It is the number of moles of solute in one litre of saturated solution and is abbreviated with a lower case's'. It is expressed in moles per litre, also known as molarity.

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Answer:

It is possible because when oxygen is present, the sugar molecules are broken down into carbon dioxide and water, but when oxygen isn't there, the sugar molecules aren't broken down completely.

Explanation:

Hope this helps! Have a great day! :D

Sugars and carbohydrates, which are plentiful in bread dough, are what yeasts eat. They convert this food into energy and as a result produce carbon dioxide gas. Fermentation is the name given to this process.

Through the activity of enzymes, fermentation is a metabolic process that results in chemical changes in organic substrates. It is specifically described in biochemistry as the process of obtaining energy from carbohydrates without the presence of oxygen.

Carbon dioxide is created by the yeast when it consumes the sugar. This gas steadily fills the balloon because it has nowhere else to go but up. As bread rises, a very similar process takes place.

Although there is just one cell in every yeast organism, these cells form multicellular colonies. They procreate through budding, a process in which a "mother cell" develops a protrusion known as a "bud" that enlarges until it is the same size as the mother.

Thus, They convert this food into energy and as a result produce carbon dioxide gas this process is fermentation.

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The property of matter that allows us to determine the volume of an object by water is Density.

Displacement is described as a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.

Density is described as the substance's mass per unit of volume which is a standard mechanical quantity.

The Archimedes' principle is very useful tool for calculating the volume of an object that does not have a regular shape wherein the oddly shaped object can be submerged, and the volume of the fluid displaced is equal to the volume of the object.

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NO is one of the main components of polluted air. It is formed in the high-temperature environment of internal combustion engines and required high amount of temperature.

It is because both N2 ad O2 are diatomic molecules and are joined through strong intermolecular or bonding forces. In order to break their bond, high amount of heat is required.

The reaction is given as

N2 + O2 -------> 2No delta H = 180 kJ

It is a reversible reaction. In this reaction, both N2 and O2 are diatomic molecules with strong bonding forces. NO i.e. Nitrogen oxide is formed by the combination of the constituents of these molecules and for this purpose a definite amount of heat energy is required to break them apart. That is why the temperature in the surrounding environment must be very high.

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