What is the value of Ksp for Ag2SO4 if 5.40g is soluble in 1.00 L of water?

Krypton, Chromium, and Oxygen with the following symbols Kr-13, Cr-2, and O-15 respectively have 23 electrons.

The atomic number of an atom determines the number of electrons it has. When the number of protons is equivalent to the number of electrons, the atom is electrically neutral. An anion, on the other hand, is an atom with a negative charge. It has gained an electron or two, or even more. Below are the chemical symbols for three different atoms or atomic anions with 23 electrons.Krypton:Kr has an atomic number of 36, indicating that it has 36 electrons. However, if we add 13 electrons to it, the total number of electrons becomes 49. Krypton with 13 additional electrons becomes Kr-13, with a total of 49 electrons.Chromium:Cr has an atomic number of 24, indicating that it has 24 electrons. Adding two more electrons to it, the total number of electrons becomes 26. The atomic anion with 26 electrons is Cr-2.Oxygen:Oxygen has an atomic number of 8, indicating that it has 8 electrons. However, if we add 15 electrons to it, the total number of electrons becomes 23. Oxygen with 15 additional electrons becomes O-15, with a total of 23 electrons.

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Answer:

If 2 half-lives have passed, it means that the radioactive substance has decayed twice, so the number of remaining atoms would be:

1st half-life: 400,000 / 2 = 200,000 atoms remaining

2nd half-life: 200,000 / 2 = 100,000 atoms remaining

Therefore, after 2 half-lives have passed, 100,000 atoms would remain, rounded to the nearest whole number

Explanation:

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Q=mcΔt

669440 = 2.10³ x 4.184 x (100-20)

669440 = 669440 √ (correct)

The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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Answer:

B

Explanation:

and is that person realize?

Answer:

The new volume of the gas is 156.25 mL.

Explanation:

According to Boyle's Law, at constant temperature and number of moles, the pressure and volume of a gas are inversely proportional.

So, we can use the following equation to solve for the new volume (V2):

P1V1 = P2V2

Where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume, respectively.

Substituting the given values:

(1.25 atm) x (250.0 mL) = (2.00 atm) x V2

Solving for V2:

V2 = (1.25 atm x 250.0 mL) / (2.00 atm)

V2 = 156.25 mL

Therefore, the new volume of the gas is 156.25 mL.

Option B, Nitric acid corrosive (HNO3) could be used to deliver hydrogen gas (H2) to zinc (Zn).

Nitric acid corrosive (HNO3) reacting with a metal in a lab experiment can deliver hydrogen gas (H2) to the system. The "nitric basic analysis" refers to this response. Zinc (Zn) is the metal that responds to nitric acid by corroding and releasing hydrogen gas.

When nitric corrosive is added to zinc, the reaction results in the production of hydrogen gas and nitrate salt as the end products.

Exothermic in nature, this response releases heat, and the resulting combustible hydrogen gas. To determine the presence of zinc in an example and focus on the properties of hydrogen gas, one can use the reaction between nitric corrosive and zinc.

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The question is -

In a laboratory experiment hydrogen gas, h2, could be produced by adding nitric acid, hno3 to which of the following?

a. Mg

b. Zn

c. Cu

d. Hg

Answer:

P_2 =0.51  atm

Explanation:

Given that:

Volume (V1) = 2.50 L

Temperature (T1) = 298 K

Volume (V2) = 4.50 L

at standard temperature and pressure;

Pressure (P1) = 1 atm

Temperature (T2) = 273 K

Pressure P2 = ??

Using combined gas law:

\(\dfrac{P_1V_1}{T_1} = \dfrac{P_2V_2}{T_2} \\ \\ \dfrac{1 *2.5}{298} = \dfrac{P_2*4.5}{273}\)

\(0.008389261745 \times 273 = 4.5P_2\)

\(P_2 =\dfrac{0.008389261745 \times 273 }{4.5}\)

\(P_2 =0.51 \ atm\)

Answer:

you didn't give enough info !

Explanation:

uhhmmmm pretty self explanitory, we need an image to go off of

The claim that "GEE washing machine is more durable than Warp-pool and Sam's Sung washing machines" is based on the experimental data gathered from the test. The data shows that the GEE washing machine was able to run for a longer period of time before breaking down, compared to the Warp-pool and Sam's Sung washing machines. With only 1 month, 2 hours, and 32 minutes of running time, GEE washing machine outlived the other two brands, which were able to run for 10 days, 5 hours, and 3 minutes and 2 months, 13 hours, and 52 minutes respectively. This indicates that the GEE washing machine is more durable and can withstand more wear and tear compared to the other two brands.

Answer:

NaCl in water; ion-dipole interaction

Explanation:

Sodium chloride is an ionic solid. Ionic solids dissolve in water due to ion dipole interaction. Ionic solids are composed of an ion pair which are strongly bound by electrostatic interaction between the oppositely charged ions in the solid state.

When an ionic substance is dissolved in water, the positive ion interacts with the negative end of the dipole in water while the negative ion interacts with the positive end of the dipole in water. Hence the ions are pulled apart by this ion-dipole interaction and the crystal structure of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. Interaction between the sodium ion and the negative end of the dipole in water as well as chloride ion and the positive end of the dipole in water leads to the dissolution of sodium chloride solid in water. This is the strongest solute-solvent interaction in the list.

When The strongest solute-solvent interactions and the interaction the correct option is A NaCl in water; ion-dipole interaction

Sodium chloride is an ionic solid. Ionic solids liquefy in water due to ion-dipole interaction. Ionic solids are formed of an ion team that is strongly bound by electrostatic interaction between the differently delegated ions in the solid-state.

When an ionic substance is disbanded in water, the positive ion interacts with the negative end of the dipole in the water while the opposing ion interacts with the positive end of the dipole in water. Therefore the ions are dragged apart by this ion-dipole interaction and also when the crystal configuration of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. The interchange between the sodium ion and the negative future of the dipole in water as well as the chloride ion and the positive end of the dipole in water leads to the abolishment of sodium chloride solid in water. This is the strongest solute-solvent exchange on the list.

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Answer:

4.2 mol NH3

Explanation:

First, balance your reaction.

N2 + 3H2 --> 2NH3

Multiply 6.3 mol H2 by the mole ratio of 2 mol NH3 for every 3 mol H2 to get moles of NH3 produced.

6.3 mol H2 • (2 mol NH3 / 3 mol H2) = 4.2 mol NH3

Explanation:

For dissolving dry mortar on floor tiles, you can use concrete and mortar dissolver. You can find this product at your local hardware store or online12.

For removing KMnO stains, you can use vinegar. Mix vinegar with water and spray or pour it on the tile surface. Let the vinegar water set in for a few minutes, then sponge the entire area to get it as clean as possible. Next, use a razor blade or scraper to peel up the mortar. Be careful not to gouge or scratch the tiles3.

KMnO is potassium permanganate. it makes water drinkable if it's polluted

For drying acid anhydrides, you can use calcium chloride. Calcium chloride is a hygroscopic substance that absorbs moisture from the air and can be used as a desiccant.

desiccants keeps things dry so they last longer like food & clothes

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The measure of the length of events and the duration of intervals between events is time.

The duration of events or the gaps between them can be measured, compared, or even ordered using time. The lengthy period of time that the Earth's geologic history takes up is known as geologic time. Starting at the beginning of the Archean Eon  formal geologic time runs until the present. Geology is defined as the "Science of the Earth."

Geology is the fundamental Earth science that examines how the earth created, its structure and composition, and the various forces acting on it. It is sometimes known as geoscience or earth science.

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Answer:

molecules will speed up

Explanation:

Given,

Molar heat capacity of gold is 25.41 J/(mol • °C)

Heat capacity of water is: 4.18 J/g. °C)

use the capacities to calculate the resultant temperature of the system using the mass of 18 grams of gold alongside 18 grams of water.

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Answer:

The gases will expand to a volume of 2.37 L

Explanation:

Gases are able to do work when they expand or compress against an external constant pressure.

This work done by gases when they expand or compress against a constant external pressure is known as pressure-volume work or PV work.

The formula for calculating the work done by gases when they compress or expand against a constant pressure is given as W = PΔV

Where ΔV is change in volume given as V2 - V1

Where V2 is final volume, V1 is initial volume

By convention, W can either be negative or positive. When work is done by the system (ΔV > 0), W is negative and when work is done on the system (ΔV < 0), W is positive.

In the gas mixture above, W = PΔV

Remaining energy, W = (1885 - 311) J = 1574 J

P = 1.036 atm = 1.036 × 760 mmHg = 787.36 mmHg

ΔV = V2 - V1

ΔV = V2 - 0.37

1574 = 1.036 (V2 - 0.37)

V2 - 0.37 = 1574/787.36

V2 - 0.37 = 1.999 L

V2 = 1.999 + 0.37

V2 = 2.369 L

Therefore, the gases will expand to a volume of 2.37 L

Answer:

They are big rocks that fly through space and are made of most commonly chondrite. When they collide, they collide with such force that they create craters on places like the moon.

Answer:

I'm pretty sure They will exhibit high conductivity, ductility, and malleability because of their atomic structure.

Explanation:

I'm not 100 percent sure

The number of the atoms of oxygen that we have is 3.97 * 10^21 atoms.

Mole is a unit of measurement used to quantify the amount of a substance. It is a fundamental concept in the field of chemistry and plays a crucial role in stoichiometry, which is the study of the quantitative relationships between substances involved in chemical reactions.

We have to note that we have 0.2 g of the aspirin and the number of moles of the aspirin would be given as;

Moles = 0.2 g/180 g/mol

= 0.0011 moles

Then we have that the number of the atoms of oxygen is;

6 * 0.0011 * 6.02 * 10^23

= 3.97 * 10^21 atoms

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Approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M.

To determine the mass of glucose (C6H12O6) required to prepare a 0.215 M solution in 5000 mL, we need to use the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

5000 mL = 5000/1000 = 5 L

Now, we can rearrange the formula to solve for moles of solute:

moles of solute = Molarity (M) x volume of solution (L)

moles of solute = 0.215 M x 5 Lmoles of solute = 1.075 mol

Since glucose (C6H12O6) has a molar mass of approximately 180.16 g/mol, we can calculate the mass of glucose using the equation:

mass of solute = moles of solute x molar mass of solute

mass of glucose = 1.075 mol x 180.16 g/mol

mass of glucose = 194.0 g (rounded to three significant figures)

Therefore, approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M. It's important to note that the molar mass of glucose used in this calculation may vary slightly depending on the level of precision required.

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Answer: A

Explanation: frying an egg

Answer:

A-frying an egg

Explanation:

your welcome have a good day.

Answer:

1. A

2. C

3. B

4. G

5. H

6. D

7. F

8. E

Explanation:

Answer:

Ti

Explanation:

We have that  he element X is

X= Titanium

From the question we are told that

XCl4 contains 74.8% Cl by mass

Hence for a 100g

Cl=74.8g

Mole of Cl=\frac{74.8}{35.5}

Mole of Cl=2.1

Meanin that 4 M of Cl=1 M of X

Generally the equation for the moles   is mathematically given as

moles = \frac{mass}{ molar mass}

Where

mass of X=100-74,8=25.3

and

moles of X=\frac{2.1}{4}

moles of X=0.527

0.527= \frac{25.2}{ molar mass}

molar mass=47.8g

Therefore

Element with molar mass=47.8g is Titanium

Hence

X= Titanium

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4) The compounds as they have been shown are diastereomers

5) The compounds as they have been shown are enantiomers

6) The charges on the cyanide carbon and the bromine ion are negative , negative

We know that the optical isomers are the compounds that are mirror images of each other. These images could be super impossible or non super imposible. When the compounds are non super impossible images we call them enantiomers but is they are super impossible mirror images we call them diastereomers.

Recall that both diastereomers and enantiomers are all kinds of stereoisomers. These are isomers that have the same molecular formula but different arrangement of the atoms in space.

Thus we could have enantiomers when we have mirror images and diastereomers when we do not have mirror images.

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The final volume of the methane gas in the container is 6.67 L.

The given parameters;

The total number of moles of gas in the container is calculated as follows;

\(n_t = 0.12 + 0.182 = 0.302 \ mol\)

The final volume of gas in the container is calculated as follows;

\(PV = nRT\\\\\frac{V}{n} = \frac{RT}{P} \\\\\frac{V_1}{n_1} = \frac{V_2}{n_2} \\\\V_2 = \frac{V_1 n_2}{n_1} \\\\V_2 = \frac{2.65 \times 0.302}{0.12} \\\\V_2 = 6.67 \ L\)

Thus, the final volume of the methane gas in the container is 6.67 L.

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Answer:

Atomic and ionic size –

As the atomic number increases, the atomic size increases and effective nuclear charge also increases which attracts the outermost shell more effectively. So, as we move left to right means from actinium to lawrencium in the actinide series, there is gradual decrease in the the atomic or ionic radii with increase in atomic number. This steady decrease I atomic size is called actinide contraction. The actinide contraction is analog to the lanthanide contraction.

Cause of Actinide contraction –

The main reason of the actinide contraction is the imperfect shielding of the one 5f-electron by another 5f- electron in the same shell. Due to poor shielding effect of the 5f electrons, effective nuclear charge increases which causes the contraction in atomic size. When one electron is added to the 5f-orbital every time means proton keeps on increasing due to which the nuclear charge increases irregularly which causes the poor shielding effect.

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To measure reaction heat under isochoric conditions, a bomb calorimeter is needed.

This device is designed to maintain a constant volume (isochoric) during the reaction, allowing for accurate measurement of reaction heat. To improve the accuracy of the coffee cup calorimeter for measuring reaction heat under isobaric conditions, a modification that could be made is to use a stirring device to ensure uniform mixing of the reactants and to minimize heat loss to the surroundings.

Additionally, a lid with a small hole could be placed over the top of the calorimeter to prevent heat loss while still allowing for pressure equalization. These modifications would help to minimize errors in heat measurement and improve the accuracy of the results obtained.

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The sub-atomic particles are not made up of atoms, they have their own identity.

Sub -atomic particles are defined as particles which compose an atom. A sub -atomic particle can be a composite particle composed of other particles or an elementary particle  which is not composed of other particles.

The elementary particles are six flavors of quarks , six types of leptons and twelve gauge Bosons .All sub atomic particles have an electric charge  which is an integer multiple of elementary charge.They are in smaller in size as  compared to atoms.

The three fundamental sub-atomic particles are electrons , protons and neutrons . The smallest known sub-atomic particles to exist are called quarks. Neutrons and protons are the sub-atomic particles which reside in the nucleus and are together called as nucleons.

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