Stoichiometry

Question 1

An heavy and light compound both have the same amount of ____ at the same temperature and ___

Answer 1

moles, pressure

Question 2

Avogadro’s number is the number of ___ in a molecules and is equal to ___

Answer 2

atoms, 6.022E23

Question 3

The percent of the compound’s mass made up by a specific element

Answer 3

percent composition

Question 4

the number of atoms of each element in a compound

Answer 4

molecular formula

Question 5

the simplest or reduced ratio of atoms in a compound; given by dividing the molecular formula by the subscript’s largest common factor

Answer 5

empirical formula

Question 6

the number of each molecule that is used to balance the chemical equation

Answer 6

coefficient

Question 7

The number of atoms of an element in each molecule

Answer 7

subscript

Question 8

The reagent that determines how much product is formed and is completely used up in a reaction

Answer 8

limiting reagent

Question 9

Under constant __ and ___ the density of a pure substance also remains constant

Answer 9

temperature, pressure

Question 10

The real quantity of a product resulting from a chemical reaction

Answer 10

actual yield

Question 11

the maximum number of product you can expect from an ideal chemical reaction; must be calculated from the limiting reagent

Answer 11

theoretical yield

Question 12

the actual yield divided by the theoretical yield times 100%

Answer 12

percent yield