In stoichiometry, chemists are mainly concerned with

a. types of bonds found in compounds
b. energy changes occuring in chemical reactions
c. mass relationships in chemical reactions
d. speed with which chemical reactions occur

i thought c?

I agree.

thank you

well

You are correct! In stoichiometry, chemists are mainly concerned with mass relationships in chemical reactions. Stoichiometry involves calculating the quantitative relationships between reactants and products in a chemical reaction. It helps chemists determine the amount of each substance that is needed or produced in a reaction. The mole ratio derived from a balanced chemical equation is often used to calculate the masses or moles of substances involved in the reaction.