Question

question 6 of 10
if a reaction starts with 6 atoms of a solid and 12 atoms of a gas, what is known about the products?

a. they will contain 18 atoms total in all the products.

b. they will consist of 6 atoms of a solid and 12 atoms of a gas.

c. they will consist of 6 atoms in 1 compound but no gas.

d. it is impossible to say what will be in the products.

Explanation:

According to the law of conservation of mass in chemical reactions, the total number of atoms before and after a reaction remains the same. The reaction starts with 6 (solid atoms) + 12 (gas atoms) = 18 atoms. So the products must also have a total of 18 atoms. Option B is incorrect because the reaction can form new substances, so the products don't have to be the same as reactants. Option C is incorrect as there's no basis to say there's no gas or only 6 atoms in one compound. Option D is incorrect because we can know about the total number of atoms from the conservation law.

Answer:

A. They will contain 18 atoms total in all the products.