Question

if there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
a 0 grams
b 2 grams
c 4 grams
d 8 grams

Explanation:

Step1: Apply law of conservation of mass

In a chemical reaction, the total mass of reactants equals the total mass of products.

Answer:

C. 4 grams