Chemistry 11
Unit 2 practice test
TOOMBS
Mole calculations:
1.
Find the number of moles of aluminum phosphide in a 47.6 g sample.
2.
How many molecules are in 44.o g of carbon dioxide?
3.
How many oxygen atoms are in 180 g of acetic acid?
4.
What is the mass in grams of a single molecule of calcium oxide?
5.
Find the number of moles of 972.3 L of ammonia at STP.
5b. Find the mass of oxygen gas that the container could hold
under the same conditions.
5c.
This same container will hold 3476 g of a gas made up of sulphur and oxygen
atoms. Find the molecular formula of this gas SxOy (in this case, x can not = y)
6.
How many grams in 420 L of nitrogen dioxide at RTP?
7.
How many molecules in 17,75 g of chlorine gas at RTP?
8.
What is the density of fluorine gas at STP?
8b.
What volume would 52 g of fluorine gas occupy?
8c.
What is the volume of this 52 g fluorine gas sample at RTP?
9.
10.
What is the volume of ONE MOLECULE of nitrogen gas at STP?
8.66
g of a gas at RTP will fill a 3.0 L container.
the gas and write its molecular formula.
Find the molar mass of
Practicing names and formulas:
Ion
Ionic or Formula
Combination Covalent
Name
Molar Mass
Ca+2 / NO2NO4-/ B+3
Cl-/ Si+4
NH4Cl
Al2S3
FeSO4
SF6
PtF6
Cl2O7
PO5
H3PO5
Calcium acetate
Dinitrogen pentoxide
Manganese (II) hydroxide
Chromium (III) oxide
Nitrogen tribromide
Magnesium arsenite
List the formulas, names & molar masses of all
the acids that you should know
SOME Examples: arsenic acid, boric acid, acetic acid, chloric acid, perchloric acid,
carbonic acid, oxalic acid, chromic acid, dichromic acid, nitric acid, phosphoric acid,
sulphuric acid, HYDROchloric acid, HYDROfluoric acid, HYDROsulphuric acid.
Chemistry 11
Unit 2 practice test
TOOMBS
Mole calculations:
1.
Find the number of moles of aluminum phosphide in a 47.6 g sample.
2.
How many molecules are in 44.o g of carbon dioxide?
3.
How many oxygen atoms are in 180 g of acetic acid?
4.
What is the mass in grams of a single molecule of calcium oxide?
5.
Find the number of moles of 972.3 L of ammonia at STP.
5b. Find the mass of oxygen gas that the container could hold
under the same conditions.
5c.
This same container will hold 3476 g of a gas made up of sulphur and oxygen
atoms. Find the molecular formula of this gas SxOy (in this case, x can not = y)
6.
How many grams in 420 L of nitrogen dioxide at RTP?
7.
How many molecules in 17,75 g of chlorine gas at RTP?
8.
What is the density of fluorine gas at STP?
8b.
What volume would 52 g of fluorine gas occupy?
8c.
What is the volume of this 52 g fluorine gas sample at RTP?
9.
10.
What is the volume of ONE MOLECULE of nitrogen gas at STP?
8.66
g of a gas at RTP will fill a 3.0 L container.
the gas and write its molecular formula.
Find the molar mass of