How many moles are in 98. 3 grams of nickel(III) phosphate

The solubility of KHT (solid) in pure water compared with the solubility of KHT (solid) in a 0.1 M KCl solution will be higher in a 0.1 M KCl solution. KCl is an electrolyte, which is a substance that dissociates into ions when it is dissolved in water. The presence of these ions can affect the solubility of other substances in the solution, which is known as the

common-ion effect.The common-ion effect is the reduction in the solubility of a substance due to the presence of a common ion in the solution. In this case, KCl contains K+ ions, which are also present in KHT. When KCl is dissolved in

water, it dissociates into K+ and Cl- ions. The K+ ions from KCl can react with the KHT and form the insoluble salt KHT. As a result, the solubility of KHT in the solution is reduced.In pure water, there are no K+ ions present, so the solubility

of KHT will be higher. However, in a 0.1 M KCl solution, the presence of K+ ions from KCl will decrease the solubility of KHT. Therefore, the solubility of KHT in a 0.1 M KCl solution will be lower than in pure water.

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Answer:

D. The element has gained one or more electrons.

Explanation:

What it means for an element to be reduced is that the element has gained one or more electrons. Also when it's oxidation number decreases, it means that the element is reduced.

I hope it helps! Have a great day!

Chemical Bonding : The molecules are usually categorized into two categories depending on the bonding and the bonding are classified into ionic bonds and covalent bonds.

Other comes under wander vall interactions.

If the molecular atoms are not hydrogen atoms then it must shares polar covalent bond , it is defined as the distribution of electrons unequally (that means one have partial charges considered both positive and negative.

The main reason behind the distribution of electrons in any atom is the electronegativity. It determines the distribution of of the shared electrons in the middle of two atoms in a polar covalent bonding.

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(d) Cs I is the appropriate response.

Cesium iodide (C s I), which has the chemical formula Cs + I2 -> CsI, is the end result of the cesium and iodine synthesis. In this synthesis reaction, iodine and cesium combine to generate a single chemical.

Iodine (I), which has a strong propensity to gain an electron due to its electronegativity, receives the outermost electron from cesium (Cs) in this reaction. Iodine becomes I- and cesium becomes Cs+ as a result. Cesium iodide (C s I),  an ionic molecule made up of the ions Cs+ and I-, is created when these ions come together.

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The product of the reaction of cesium with iodine is CsI. Cesium iodide (CsI) is an ionic compound composed of cesium cations (Cs+) and iodide anions (I-).

It is a colorless or white crystalline solid with a cubic crystal structure. CsI has a high melting point and is soluble in water and polar solvents. It is commonly used in scintillation detectors, as a flux in the preparation of certain metals, and as a source of cesium ions in atomic clocks. CsI has a wide range of applications in medical imaging, radiation therapy, and nuclear physics due to its high sensitivity to X-rays and gamma rays. Iodine is a chemical element with the symbol I and atomic number 53. It is a nonmetal in the halogen group on the periodic table, with properties similar to other halogens such as fluorine, chlorine, and bromine. Iodine is a lustrous, purple-black solid at standard conditions, sublimating readily into a purple-pink gas that has an irritating odor.

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Answer:

it is an endothermic reaction

Explanation:

This is because there is a rise in temperature from 20 to 46. this means that the reaction takes in heat from the suuroundings

Answer:

Answer to the following question is as follows;

Explanation:

Alkynes' vapour pressure and normal boiling points are altered when chain length grows, since vapour pressure rises while boiling point falls.

Vapour pressure always include pressure entered by vapour with its condensed phase, pressure include molecules force of attraction include vapour

6 moles of magnesium (Mg) would be produced if 12 moles of potassium (K) reacted.

balanced chemical equation for reaction of potassium with magnesium chloride is:

2 K + MgCl2 ⇔ 2 KCl + Mg

From this equation, every 2 moles of potassium (K) that react, 1 mole of magnesium (Mg) is produced.

Therefore, if 12 moles of potassium react, we can calculate the number of moles of magnesium produced as:

12 moles K × (1 mole Mg / 2 moles K) = 6 moles Mg

So, 6 moles of magnesium (Mg) would be produced if 12 moles of potassium (K) reacted.

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Answer:

0.07 g/s.

Explanation:

From the question given above, the following data were obtained:

Mass lost = 9.85 g

Time taken = 2 min 30 s

Mean rate =?

Next, we shall convert 2 min 30 s to seconds (s). This can be obtained as follow:

1 min = 60 s

Thus,

2 min = 2 × 60 = 120 s

Therefore,

2 min 30 s = 120 s + 30 s = 150 s

Finally, we shall determine the mean rate of the reaction. This can be obtained as illustrated below:

Mass lost = 9.85 g

Time taken = 150 s

Mean rate =?

Mean rate = mass lost / time taken

Mean rate = 9.85 / 150

Mean rate = 0.07 g/s

Therefore, the mean rate of the reaction is 0.07 g/s

The aluminium sample that would react most rapidly with the copper sulfate solution under the same conditions of temperature and pressure would be the powder.

Thus, the correct answer is the powder (C).

The powder hаs the lаrgest surfаce аreа аvаilаble for reаction, аllowing for more collisions between the аluminum аtoms аnd the copper sulfаte solution. The copper sulfаte is аn inorgаnic compound thаt combines sulfur with copper. The greаter the surfаce аreа, the fаster the reаction rаte. Therefore, the powder would reаct most rаpidly compаred to the pellets, grаm, or ribbon.

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Explanation:

We use the balanced chemical equation to determine the mole ratio between KI and I2.

From the balanced equation,

2 moles of KI produce 1 mole of I2

So, 1 mole of I2 is produced from 2 moles of KI.

To find the moles of KI required, we can use the following formula:

moles of KI = moles of I2 / 2

At STP, 1 mole of any gas occupies 22.4 L volume.

So, the number of moles of I2 can be calculated as:

n = V / Vm = 44.8 L / 22.4 L/mol = 2.00 mol

Substituting the value of n in the above formula, we get:

moles of KI = 2.00 mol / 2 = 1.00 mol of KI

Therefore, 1.00 mol of KI was required for the reaction.

The percentage yield is 79.22%

What is percentage yield?

Percent yield in chemistry is the percentage of the product's weight to its theoretical yield. In order to quantify the outcome in percent, we divide the experimental yield by the theoretical yield and multiply the result by 100. Since the actual yield attained following the reaction is frequently lower than the theoretical value, the value of percent yield is typically lower than 100%. An incomplete reaction can be to blame for this.

A percent yield that is higher than 100% indicates that a bigger amount of sample was recovered from the reaction than was first anticipated. Yield as a percentage is always positive.

Cooper oxide has a mass of 1.414 grammes.

The Cooper oxide moles =

1.414 gmol

79.545

The following is the reaction equation:

CuO (s) + H2SO4 (aq) CuSO4 (aq) + H2O (/).

CuSO4 is created from 1 mole of CuO.

CuSO4 is created when 0.0177 moles of CuO are used.

Actual CuO production amounts to 3.5 g 249.6 g mol, or 0.0140 mol.

The yield was 0.0140 mol and 0.0177 mol.

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Answer: I don't know for sure but A and D seem like the best choices

Explanation:

Answer:

3.1% is the fraction of the sample after 28650 years

Explanation:

The isotope decay follows the equation:

Ln[A] = -kt + Ln[A]₀

Where [A] could be taken as fraction of isotope after time t, k is decay constant and [A]₀ is initial fraction of the isotope = 1

k could be obtained from Half-Life as follows:

K = Ln 2 / Half-life

K = ln 2 / 5730 years

K = 1.2097x10⁻⁴ years⁻¹

Replacing in isotope decay equation:

Ln[A] = -1.2097x10⁻⁴ years⁻¹*28650 years + Ln[1]

Ln[A] = -3.4657

[A] = 0.0313 =

Explanation:

I think the answer is B ‍♂️ but I'm not sure

Answer:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

Answer:

NaHCO₃

Explanation:

Sodium bicarbonate (baking soda) is a chemical compound with the formula NaHCO₃.

Answer:

47

Ag

Silver

107.87

Explanation:

The main answer is that the compound with a six carbon chain and a ketone on carbon 4 will not form a yellow precipitate when treated with excess iodine in the presence of NaOH.

that the yellow precipitate formed in this reaction is due to the presence of an alpha-beta unsaturated carbonyl compound, which can undergo a reaction with iodine and NaOH to form iodoform. However, the compound with a ketone on carbon 4 does not have an alpha-beta unsaturated carbonyl group, so it will not react with iodine and NaOH to form a yellow precipitate.

out of the given options, only the compound with a six carbon chain and a ketone on carbon 4 will not form a yellow precipitate when treated with excess iodine in the presence of NaOH.

The compound(s) that will not form a yellow precipitate when treated with excess iodine in the presence of NaOH are: a five carbon chain with a ketone on carbon 3 and a six carbon chain with a ketone on carbon 4.
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: When treated with excess iodine in the presence of NaOH, compounds that contain methyl ketones (RC(O)CH3) will undergo the iodoform reaction, which produces a yellow precipitate of iodoform (CHI3). In this case, the compounds with ketones on carbon 2 (both five and six carbon chains) contain methyl ketones, so they will form a yellow precipitate. However, the five carbon chain with a ketone on carbon 3 and the six carbon chain with a ketone on carbon 4 do not contain methyl ketones and will not form a yellow precipitate.

Based on the structures provided, the compounds that will not form a yellow precipitate in the reaction with excess iodine and NaOH are those with a ketone on carbon 3 in a five carbon chain and a ketone on carbon 4 in a six carbon chain.

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The car's displacement is 5 m downwards and the distance traveled is 5 m.

The displacement of the car is calculated as follows;

The displacement is the change in position of the car.

D = Δx

D = X2 - X1

D = 20 m - 15 m

D = 5 m downwards

The distance is path covered, and it has no direction.

Distance = 20 m  - 15 m = 5 m

Thus, the car's displacement is 5 m downwards and the distance traveled is 5 m.

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Velocity = Frequency x Lambda

Assuming that this is referring to an electromagnetic wave. The velocity of light is 2.998 x 10^8 m/s.

Convert the wavelength from cm to m. So divide it by 100 and you get 5.4x10^-7 meters.

2.998 x 10^8 = 5.4 x 10^-7 (λ)

Solve for λ and you get 5.55 x 10^14 Hz

The frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

Frequency can be defined as the number of oscillations of a wave in one second. The frequency of the wave has S.I. units which are per second or hertz.

Wavelength can be described as the distance between the two most adjacent points in phase with each other. Two adjacent crests or troughs on a wave are separated by a distance of a single wavelength.

The relationship between frequency, speed of light, and wavelength is:

c = νλ

Given, the wavelength of the wave, λ = 5.4 ×10⁻⁵ cm

Then the speed of the wave is speed of light, c = 3 ×10¹⁰ m/sc

The frequency of the waves can be calculated from the above mentioned relationship:

The frequency of the given wave will be equal to:

ν = c/λ = 3× 10¹⁰/5.4 ×10⁻⁵ = 5.55 ×10¹⁴ s⁻¹

Therefore, the frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

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Explanation:

Hydrogen bonding, present in alcohols but not hydrocarbons, leads to strong intermolecular forces and increases the boiling point significantly.

For example:

Glycerol has 3 OH groups, which lead to a much more extensive hydrogen-bonding network and a higher boiling point compared to the 1 OH or 2 OH in other chains.

Answer: A

Explanation: element 119, ununennium, is highly reactive and has high ionization energy, leave A as the only answer.

A double bond in a hydrocarbon chain of a fatty acid can influence the dispersion forces that can form between the hydrocarbon chains by decreasing the strength of the dispersion forces.

Dispersion forces, also known as van der Waals forces, are the weakest type of intermolecular forces that occur between molecules. These forces are caused by temporary dipoles that form when electrons in the molecules move around.

In a hydrocarbon chain with only single bonds, the chain is able to pack closely together, allowing for stronger dispersion forces between the chains. However, when there is a double bond present in the chain, it creates a kink or bend in the chain, preventing it from packing as closely with other chains. This decreases the strength of the dispersion forces between the chains.

Therefore, the presence of a double bond in the hydrocarbon chain of a fatty acid can decrease the strength of the dispersion forces between the chains, leading to weaker intermolecular forces and potentially different physical properties, such as a lower melting point.

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14.2 mL of 0.0670 M EDTA is required to react with 50.0 mL of 0.0200 M Cu². we can determine the volume of 0.0670 M EDTA required to contain 0.00100 moles of EDTA:Volume = moles ÷ Molarity = 0.00100 moles ÷ 0.0670 M = 0.0142 L = 14.2 mL.

To solve this problem, we can use the following balanced chemical equation:Cu²⁺ + EDTA⁴⁻ → CuEDTA²⁻We can see that for every 1 mole of Cu²⁺, we require 1 mole of EDTA⁴⁻. From there, we can use stoichiometry to determine the amount of EDTA required.Let's first determine the number of moles of Cu²⁺ in 50.0 mL of 0.0200 M Cu²⁺:moles of Cu²⁺ = Molarity × Volume (in liters) = 0.0200 M × 0.0500 L = 0.00100 moles Cu²⁺

Now we can determine the number of moles of EDTA required to react with 0.00100 moles of Cu²⁺:moles of EDTA = moles of Cu²⁺ = 0.00100 molesFinally, we can determine the volume of 0.0670 M EDTA required to contain 0.00100 moles of EDTA:Volume = moles ÷ Molarity = 0.00100 moles ÷ 0.0670 M = 0.0142 L = 14.2 mL.

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1.802molS

This is found by using the conversion factor: 1mol/32.07gS. This factor can be used to convert from grams of sulfur (given in the problem) to moles of sulfur. To use this conversion factor, divide 57.8gS by 32.07gS to find the number of moles of sulfur: 57.8gS / 32.07gS = 1.802molS.

If a piece of metal, such as calcium or magnesium, reacts with atmospheric oxygen, the product would be expected to have a greater mass than the reacting metal.

Every chemical reaction agrees with the law of conservation of mass.

According to this law, the mass of substances is conserved during the process of undergoing reactions. However, the mass could have been converted from one form to another during the reaction.

Going by this law, if substance A reacts with substance B to form a new substance AB, the mass of AB would be the addition of individual masses of A and B.

Thus, if a metal reacts with oxygen in the air, the mass of the product should be the mass of the metal plus the mass of the oxygen that reacts to form the product.

For example: \(2Mg + O_2 --- > 2MgO\)

The mass of MgO, in this case, would be the mass of the Mg and the mass of the \(O_2\). Thus, the mass of MgO would be greater than the mass of Mg.

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Answer:

Ratio is 4:1

Explanation:

from graham's law of gaseous diffusion:

\({ \bf{ \frac{R _{A} }{R_{B} } = \sqrt{ \frac{M_{A} }{M_{B}} } }}\)

but Ra = 2Rb:

\({ \sf{ (\frac{2}{1} ) {}^{2} = \frac{M _{A}}{M _{B} } }} \\ \\ { \sf{\frac{M _{A}}{M _{B} } = \frac{4}{1} }} \\ \\ {M _{A}} : {M _{B} } = 4 :1\)

Answer:

= - 303.975 Joules

Explanation:

Given that:

The volume of the cylinder = 0.003 m^3

Now, to liters:

The volume = 0.003 *1000 L

= 3 L

For an open cylinder, we mean the atmospheric pressure is at standard condition.

Thus, the workdone = -PΔV

= - 1 atm (3 L)

= - 3 L atm

1 L atm to Joules

= 101.325 Joules

Therefore;

=- 3* 101.325 Joules

= - 303.975 Joules

The statement that "there are many types of energy" is correct. Energy is a fundamental concept in science and refers to the ability of a system to do work or cause a change. There are many different types of energy, each with its own characteristics and properties.

One of the most familiar forms of energy is light energy, which is produced by the sun and other sources of radiation. Sound energy is another form of energy that is produced by vibrations in matter, and it can be detected by the human ear. Thermal energy is the energy associated with the temperature of an object, and it is related to the movement of atoms and molecules within that object.

Chemical energy is stored in the bonds between atoms and molecules, and it is released during chemical reactions. Electrical energy is associated with the movement of electrons through a conductor, and it is used to power many of the devices we use every day. Other forms of energy include nuclear energy, gravitational energy, and kinetic energy.

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