Question

stoichiometry is primarily used to = a. predict the speed of a chemical reaction. b. calculate the amounts of reactants and products in a chemical reaction. c. identify the physical states of substances in a chemical reaction. d. determine the color change in a chemical reaction.

Explanation:

Stoichiometry is based on the law of conservation of mass. It uses mole - ratios from balanced chemical equations to calculate amounts of reactants and products in a chemical reaction. It doesn't deal with reaction speed, physical states, or color change primarily.

Answer:

B. Calculate the amounts of reactants and products in a chemical reaction.