Question #32917

1 Answer
Nov 3, 2017

Law of conservation of mass which states the total mass of reactants must be equal to the total mass of products.

So, the answer should be 35 g.

Explanation:

In this question, we have two reactants i.e. A (30 g) and B (20 g) and the total mass of reactants is given by 50g.

According to the law of conservation of mass, the products should also be 50 g.

Hence,
mass of C + mass of D = 50 g
or, 15 + mass of D = 50 g
or, mass of D = 50 g - 15 g = 35 g.