WorksheetsThe Mole: A Unit of Measurement of Matter 5 - Post
Total questions: 10
Worksheet time: 18mins
Name
Class
Date
1.
Propane is a gas used for cooking and heating. How many atoms are in 1.06 mole of propane C3H8 ?(H=1, C=12)
a)
1.4 x 1025 atoms
b)
7 x 1024 atoms
c)
1.4 x 1023 atoms
2.
What is the molar mass of fluorine gas?
(beware!)
(beware!)
a)
18.998 g/mol
b)
38 g/mol
c)
9 g/mol
d)
18 g/mol
3.
How many formula units are in 2.5 moles of NaCl?
a)
1.5 x1024 formula units
b)
1.5 formula units
c)
4.2 formula units
d)
4.2 x10-24 molecules
4.
How many formula units are there in 2.45 moles potassium chloride?
a)
4.07 x 10-24
b)
1.47 x 1024
c)
1.47
d)
4.07
5.
What is the molar mass of CO2?
a)
12
b)
16
c)
32
d)
44
6.
How many particles are in a mole?
a)
602
b)
602 million
c)
602 moles
d)
6.02 x 1023
7.
What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?
a)
62.435g
b)
116.399g
c)
133.341g
d)
97.888g
8.
What is the mass of one mole of Helium?
a)
4 g
b)
2 g
c)
8 g
d)
There is no way to know
9.
What is the molar mass of AgF?
a)
514.9 g/mol
b)
99.7 g/mol
c)
126.87 g/mol
d)
198.8 g/mol
10.
What is the molar mass of ammonium sulfide - (NH4)2S?
a)
68.17 g/mol
b)
40.02 g/mol
c)
114.12 g/mol
d)
82.91 g/mol
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