Cisco

Chemistry

26 February, 13:50

Circle the letter of the best answer.

1. Which statement is true?

a. Mole ratios limit the number of significant figures in a calculation.

b. You must know the masses of all the reactants in a chemical equation in order to determine the

masses of all the products.

c. The mole ratio is needed only to solve problems in which the given is a mass in grams and the

unknown is an amount in moles.

d. A mole ratio can only be determined from a correctly balanced chemical equation.