1. The mass of solid precipitates after performing a chemical reaction in Experiment 1 is 38.3 grams. The

mass of the solids in Experiment 2 is 35.9 grams. What is the percent change of the mass from

Experiment 1 to Experiment 2?

A6.3% increase
B6.3% decrease
C6.7% increase
D6.7% decrease