Question

Empty mass of elements before a chemical reaction is 30 G after the chemical reaction the mass will be
A. 0 grams
B. 32 grams
C. 30 grams
D. 28 grams

Answer 1

According to the law of conservation of mass, the total mass of reactants before a chemical reaction must equal the total mass of products after the reaction. Therefore, if the empty mass of the elements before the reaction is 30 grams, the mass will remain 30 grams after the reaction.

The correct answer is:
C. 30 grams