Question

when paper is burned, the mass of the remaining ash is less than the mass of the original paper.which statement best describes this result? c. the mass of the ash cannot be accurately determined. a. the ash is denser than the paper. d. some of the papers matter is destroyed during the reaction. b. some of the mass is lost as it escapes in smoke.

Explanation:

When paper burns, it undergoes a chemical reaction with oxygen in the air. Some of the substances in the paper turn into gaseous products like carbon - dioxide and water vapor which escape as smoke. According to the law of conservation of mass, matter is not created or destroyed in a chemical reaction. So the decrease in mass of the remaining ash compared to the original paper is due to the mass of substances that escaped as smoke.

Answer:

B. Some of the mass is lost as it escapes in smoke.