PLZZZZ HELP PEOPLE! chemistry multiple choice?

Question

The study of the quantity relationships between the reactants and products in a chemical reaction is called..a) quantifying b) conversions c) reaction chemistry d) stoichiometry

The substance not completely used up in a chemical reaction is known as the.. a)limiting reactant b) limiting product c) excess reactant d)excess product

The conversion factor which is found in ALL stoichiometry problems is.. a) molar mass b) density c) mole ratio d)temperature

Actual yield must be determined through: a)estimations b) theoretical yield c) calculations d) experiments

Answer 1

a c d d

Answer 2

a, c, d, d

Good luck

Answer 3

d) stoichiometry

For ex: 2H2 + O2 ---> 2H2O

We could do stoichiometry to figure out how many moles of water is yielded from a mole of oxygen.

c) excess reactant

The substance is not completely used up. Therefore, it is in excess, or extra.

c) mole ratio

Mole ratios are found in ALL stoichiometry problems. Molar mass conversions are common, but not necessary in some problems.

d) experiments

Doing an experiment is the only way to get an ACTUAL yield.

:)