WorksheetsThe Mole Bozeman Science
Total questions: 21
Worksheet time: 43mins
Name
Class
Date
1.
A mole of potassium chloride contains 6.02 x 1023 _____.
a)
atoms
b)
representative particles
c)
ions
d)
molecules
2.
Molar mass is in units of ________.
a)
grams
b)
grams/mole
c)
mole
d)
moles/gram
3.
What is the molar mass of carbon?
a)
6 grams
b)
12 grams/mole
c)
18 moles
d)
6 moles/gram
4.
What is the molar mass of water?
a)
3 grams/mole
b)
18 grams/mole
c)
18 moles
d)
6 moles/gram
5.
Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?
a)
1 g Ti / 47.84 mol Ti
b)
1 mol Ti / 47.84 g Ti
c)
47.84 mol / 1 g Ti
d)
47.87 g Ti / 1 mol Ti
6.
Which compound has the smallest molar mass?
a)
CO
b)
CO2
c)
H2O
d)
H2O2
7.
Which represents the greatest mass of sulfur?
a)
1 gram of sulfur
b)
1 molecule of sulfur
c)
0.5 mole of sulfur
d)
6.02 x 1023 atoms of sulfur
8.
Which has the greatest number of molecules?
a)
1 mole of methane CH4
b)
28 grams of carbon monoxide CO
c)
16 grams of methane CH4
d)
none of the above
9.
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
10.
Which has a greater mass: 1 mole of scandium or 2 moles of boron?
a)
scandium
b)
boron
c)
neither
d)
more information is needed.
11.
What is the mass of 2.50 mol of oxygen gas O2?
a)
40 g
b)
80 g
c)
16 g
d)
32 g
12.
What is the mass in grams of 6.25 mol of copper (II) nitrate?
a)
126 g
b)
785 g
c)
625 g
d)
1172 g
13.
Avogadro's number of representative particles is equal to one_____.
a)
kilogram
b)
gram
c)
kelvin
d)
mole
14.
What do we call the SI unit for amount of a substance?
a)
Avogadros number
b)
kilogram
c)
mole
d)
liter
15.
What is the molar mass of AuCl3?
a)
96 g
b)
130 g
c)
232.5 g
d)
303.3 g
16.
What is the molar mass of (NH4)2CO3 ?
a)
144 g
b)
138 g
c)
96 g
d)
78 g
17.
What is the mass in grams of 5.90 mol C8H18?
a)
.0512 g
b)
19.4 g
c)
673 g
d)
389 g
18.
How many atoms of carbon are in five molecules of propane, C3H8?
a)
40
b)
3
c)
15
d)
8
19.
How many molecules of sugar (C6H12O6) are in a mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
20.
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
21.
How many hydrogen atoms are in 8.46 moles of methane, CH4?
a)
33.84 atoms
b)
2.04 x 1025 atoms
c)
2.04 x 1025 molecules
d)
34 atoms
100 %
