Question

Assume that 3 g of compound A react with 6 g of compound B. A solid is produced in the reaction, and some gas is also released. The solid has a mass of 2 g. What is the mass of the gas that was released in the reaction? How do you know?

Answer 1

By applying the Law of Conservation of Mass, the mass of the gas released in the reaction is determined to be 7 g, which is the difference between the total mass of reactants (9 g) and the mass of the solid product (2 g).

Step-by-step explanation:

The question involves a chemical reaction where 3 g of compound A reacts with 6 g of compound B, producing 2 g of solid. To find the mass of the gas released, we need to apply the Law of Conservation of Mass, which states that the mass of reactants must equal the mass of products in a chemical reaction. In this case, the total initial mass of reactants is 3 g + 6 g = 9 g. Since the mass of the solid product is 2 g, the mass of the gas released would be the difference between the total initial mass and the mass of the solid, which is 9 g - 2 g = 7 g.