a reaction begins with 15 grams of reactant. how many grams of products will be formed by the reaction?

1. 20 grams

2. 15 grams

3. 10 grams

4. it depends on the type of reaction

Option (2) is the correct answer.

Explanation:

According to law of conservation of mass, mass can neither be created nor it can be destroyed but it can be converted into one form to another.

For example, when mass of a reactant in a chemical reaction is 15 grams then product formed by it will also weigh 15 grams.

This is means mass of the reactant has now converted into the mass of product according to law of conservation of mass.

Thus, we can conclude that 15 grams of products will be formed by the reaction.