STOICHIOMETRY

Question 1

also known as atomic weight is the mass of an atom in atomic mass units

Answer 1

atomic mass

Question 2

the _______ unit is defined as the mass that is exactly one-twelfth of the mass of one carbon 12 atom

Answer 2

relative atomic mass

Question 3

a __ is defined as the amount of a substance containing the same number of atoms molecules or other particles as there are atoms in 12 grams of the carbon 12

Answer 3

mole

Question 4

accepted value of Avogadro’s Number today

Answer 4

6.02×10²³

Question 5

defined as the mass in grams/kg of 1 mole of atoms

Answer 5

molar mass

Question 6

a formula that tells each the whole number ratio of atoms in a compound

Answer 6

empirical formula

Question 7

percent by mass of each element that makes up a compound

Answer 7

percent comps

Question 8

percent by mass of each element that makes up a compound

Answer 8

percent comps

Question 9

initial substances reacting

Answer 9

reactants

Question 10

substances result from the reaction

Answer 10

products

Question 11

it deals with relative quantities of reactants and products

Answer 11

stoichiometry

Question 12

the ____ is the reactant that is completely used up in a chemical reaction

Answer 12

limiting reagent

Question 13

the _____ is the reactant present in quantities greater than necessary to reactive the quantity of the limiting reagent in a chemical reaction

Answer 13

excess reagent

Question 14

,______ is the quantity of product calculated to form when all the limiting reactant is consumed

Answer 14

theoretical yield

Question 15

______ is the amount of product actually obtained

Answer 15

actually yield