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Worksheets11 The Mole
Total questions: 15
Worksheet time: 25mins
Name
Class
Date
1.
The best definition for a mole provided below is
a)
The SI unit for the mass of something
b)
The SI unit for the amount of a substance
c)
The SI unit for the volume of something
d)
The SI unit for the area of a substance
2.
The number 6.02 x 1023, which is the number of particles found in a mole.
a)
molar mass
b)
mole
c)
Avogadro's number
d)
hydrate
3.
What is the molar mass of copper?
a)
12 g/mol
b)
63.5 g/mol
c)
58.9 g/mol
d)
40.1 g/mol
4.
What is the molar mass of table salt (NaCl)?
a)
116.9 g/mol
b)
35.5 g/mol
c)
23 g/mol
d)
58.4 g/mol
5.
What is the molar mass of fluorine gas?
a)
19 g/mol
b)
38 g/mol
c)
9 g/mol
d)
18 g/mol
6.
What is the molar mass of B2(CO3)3?
a)
81.6 g/mol
b)
94.8 g/mol
c)
38.8 g/mol
d)
201.6 g/mol
7.
What is the mass of one mole of aluminum?
a)
27 g
b)
13 g
c)
54 g
d)
14 g
8.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.05 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5.00 moles
9.
The mass in grams of one mole of any pure substance.
a)
molecular formula
b)
hydrate
c)
mole
d)
molar mass
10.
How many formula units does 5 moles of helium represent?
a)
8.31 x 1024 units He
b)
3.01 x 10-24 units He
c)
3.01 x 1024 units He
d)
8.31 x 10-24 units He
11.
How many grams are there is 1.35 x 1025 atoms of K2SO4?
a)
3,909 g K2SO4
b)
174.1g K2SO4
c)
3.53 x 1021 g K2SO4
d)
423 g K2SO4
12.
A mole of potassium chloride contains 6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
13.
How many grams are in 1.2 x 1024 molecules of CO?
a)
28 grams
b)
56 grams
c)
6.02 grams
d)
1.2 grams
14.
How many water molecules are in 5.2 moles of water?
a)
6.02 x 1023
b)
5.2
c)
3.1304 x 1024
d)
8.638 x 10-24
15.
What is the difference between a formula unit and a molecule?
a)
formula unit - ionic bond
molecule - covalent bond
molecule - covalent bond
b)
formula unit - big
molecule - small
molecule - small
c)
formula unit - covalent bond
molecule - ionic bond
molecule - ionic bond
d)
formula unit - small
molecule - big
molecule - big
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