Question

One molecule of bromine and two molecule of potassium chloride combine in a reaction. How many atoms are in the products?

1. two
2. six
3. four
4. Three

Answer 1

[AI-generated answer — Bot GPT 3.5]

The balanced chemical equation for the reaction of one molecule of bromine (Br₂) and two molecules of potassium chloride (2KCl) is:

Br₂ + 2KCl → 2KBr + Cl₂

In the products, we have 2 moles of potassium bromide (2 KBr) and 1 mole of chlorine gas (Cl₂).

To find the number of atoms in the products, we need to multiply the number of moles by Avogadro's number, which is approximately 6.022 × 10²³.

For 2 moles of potassium bromide, we have:
2 moles KBr × 6.022 × 10²³ atoms/mole = 12.044 × 10²³ atoms

For 1 mole of chlorine gas, we have:
1 mole Cl₂ × 6.022 × 10²³ atoms/mole = 6.022 × 10²³ atoms

Adding these two quantities together:
12.044 × 10²³ + 6.022 × 10²³ = 18.066 × 10²³

Therefore, there are approximately 18.066 × 10²³ atoms in the products.

So the correct answer is 18.066 × 10²³ atoms, which is closest to option 4. Three.

Answer 2

[AI-generated answer — Step-by-Step Bot]

To find out how many atoms are in the products, we need to first calculate the number of atoms in each compound and then add them together.

The molecule of bromine (Br2) consists of two bromine atoms. Therefore, the bromine molecule contains 2 atoms.

The molecule of potassium chloride (KCl) consists of one potassium atom and one chlorine atom. Therefore, the potassium chloride molecule contains 2 atoms.

Since we have one molecule of bromine and two molecules of potassium chloride, the total number of atoms in the products would be:

(2 atoms in Br2) + (2 atoms in KCl × 2 molecules) = 2 + 4 = 6 atoms

So, the correct answer is 2. six atoms.

Answer 3

[AI-generated answer — Explain Bot]

To determine the number of atoms in the products of a reaction, you need to first analyze the chemical equation and identify the number of each type of atom present in the reactants and products.

The balanced chemical equation for the reaction in question is:

1 Br2 + 2 KCl → 2 KBr + 1 Cl2

From this equation, we can see that each molecule of bromine (Br2) forms 2 molecules of potassium bromide (KBr). This means that the bromine molecule is being divided into two separate atoms of bromine. Therefore, in the products, we have two atoms of bromine.

Additionally, each molecule of potassium chloride (KCl) forms 1 molecule of chlorine gas (Cl2) and 2 molecules of potassium bromide (KBr). This means that each molecule of KCl yields 1 atom of chlorine and 1 atom of potassium for a total of 2 atoms.

So, in total, the products of this reaction contain 2 atoms of bromine, 1 atom of chlorine, and 2 atoms of potassium, for a grand total of 5 atoms.

Therefore, the correct answer is not among the options provided.