BaCl2 (aq) and K2CrO4 (aq) combine in a double replacement reaction. Select the reaction below that correctly represents the products of the reaction. BaCl2 (aq) + K2CrO4 (aq) Ba (s) + 2KCl (aq) + 2Cr (s) + 2O2 (g) BaCl2 (aq) + K2CrO4 (aq) BaCrO4 (s) + 2KCl (aq) BaCl 2 (aq) + K2CrO4 (aq) BaCrO3 (s) + 2KCl (aq) + O (g) BaCl2 (aq) + K2CrO4 (aq) BaCrO4 (s) + KCl (aq)

Answers

Answer 1

Answer: The correct answer is BaCl2(aq) + K2CrO4(aq) = BaCrO4(s) + 2KCl(aq). According to the solubility of ions, BaCrO4 is insoluble compounds. So the products should be BaCrO4 and KCl.

Answer 2

Answer:

Answer:

BaCl2(aq) + K2CrO4(aq) = BaCrO4(s) + 2KCl(aq).

Explanation:

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Which statement describes one acid-base theory?

Answers

A base is an H⁺ acceptor, whereas an acid is an H⁺ donor. Acidic chemicals are typically recognized by their sour flavor.

What is acid-base theory?

Any hydrogen which contains a compound capable of giving a proton to another material is described as an acid. An ion and molecule that can receive a hydrogen ion from that of an acid is known as a base. Acidic chemicals are typically recognized by their sour flavor.

In essence, an acid is a substance that has the capacity to donate an H⁺ ion plus maintain its energetic favorability even after losing an H⁺ ion. It is well known that acids may change blue litmus into red. Bases, on the other hand, have a slick consistency and a bitter flavor. A base is an H⁺ acceptor, whereas an acid is an H⁺ donor.

Therefore, a base is an H⁺ acceptor, whereas an acid is an H⁺ donor.

To learn more about acid-base theory, here:

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An acid is an H+ donor, and a base is an H+ acceptor. Good luck!

The atomic number of an atom will always identify the amount of protons in its nucleus. If the atom is neutral, what else is identified by the atomic number? A. the number of neutrons in the atom B. the most common isotope of the atom C. the atomic mass of the atom D. the number of electrons in the atom

Answers

D.The number of electrons in an atom.In an atom,the number of protons and electrons are always the same which is indicated by the atomic number.Since we know that protons have a positive charge, and electrons have a negative charge this suggests that an atom is always neutral as +1-1=0.

Describe the events that occur as water molecules start in hot bath water and end up on the surface of the bathroom mirror.

Answers

This happens because of evaporation and condensation. The warm water speeds up the evaporation process. This means that water molecule escapes from the liquid phase to the vapor phase. The mirror is in a relatively cooler temperature compared to the hot bath enough to condense the vapor. When the vapor is in contact with the mirror, condensation happens and turns the vapor molecules into droplets of liquid on the mirror surface.

If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper?

Answers

Answer:

The theoretical yield of copper is 79.6281 g

Explanation:

$CuSO_4+Zn\rightarrow ZnSO_4+Cu$

Moles of copper sulfate = $(200.0 g)/(159.609 g/mol)=1.2530 mol$

According to reaction 1 mol of copper sulfate gives 1 mol of copper .

Then 1.2530 mol of copper sulfate will gives :

$(1)/(1)* 1.2530 mol=1.2530 mol$ of copper .

Mass of 1.2530 mol of copper :

1.2530 mol × 63.55 g/mol = 79.6281 g

The theoretical yield of copper is 79.6281 g

The theoretical yield of copper is a 78:32 ratio.

What is the chemical formula for tin (II) fluoride?

Answers

SnF2 with the 2 being a subscript

What is the percent composition by mass of nitrogen in NH4NO3 (gram-formula mass = 80.0 grams/mole)?(1) 17.5% (3) 52.5%
(2) 35.0% (4) 60.0%

Answers

Answer:

The correct option is (2) 35.0%

Explanation:

If we want to calculate the percent composition by mass of nitrogen in NH4NO3 we first need to calculate the mass of nitrogen in one mole of NH4NO3.

Because of the molecular form of NH4NO3 (it has 2 ''N'') we know that one mole of NH4NO3 contains 2 moles of N.

The molar mass of N (nitrogen) is $14.0067(g)/(mole)$

This means that 1 mole of N contains 14.0067 grams of N.

Because we have 2 moles of N ⇒ $(2moles).(14.0067(g)/(mole))=28.0134g$

We know that in 1 mole of NH4NO3 we have 2 moles of N(28.0134 g of N).

To calculate the percent composition by mass of nitrogen we need to divide the mass of nitrogen in one mole of NH4NO3 by the mass of one mole of NH4NO3 and then multiply it by 100.

We know that in 1 mole of NH4NO3 there are 80.0 g of NH4NO3 (Because of the molar mass data) ⇒

$((28.0134g)/(80.0g)).100=35.016$ % ≅ 35.0%

We find that the percent composition by mass of nitrogen in NH4NO3 is 35.0%

We conclude that the correct option is (2) 35.0%

gram-formula=80.0grams/mole will be 35.0%

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