Question

Q.6. You have a chemical in a sealed glass container filled with air. The setup is sitting on a balance, as shown. The chemical is ignited by means of a magnifying glass focusing sunlight on there actant. After the chemical has completely burned, which of the following is true? Explain your answer.
a. The balance will read less than 250.0 g.
b. The balance will read 250.0 g.
c. The balance will read greater than 250.0 g.
d. Cannot be determined without knowing the identity of the chemical.
250.0g

Short answer

Answer

The balance will read 250 g. The correct answer is option b.

Step-by-step solution

Step-by-Step SolutionStep 1: Law of conservation of mass

When the chemical reaction happens following the law of conservation of mass, it can neither create nor destroy the mass. There is a closed container, so the gas formed during the reaction cannot leave the container.

Explanation

The conversion of reactants into products during combustion will not change the overall mass in the closed container. Hence, among the given options, the correct option is option b.