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The Mole Conversions

Total questions: 73

Worksheet time: 18hrs 1mins

Name
Class
Date
1.

What is Avogadro's number?

a)

6.022E25

b)

6.222E25

c)

6.022E23

d)

25 Pizza Bites

2.

How many moles are in 19.82 g Mg?

a)

1.226mol Mg

b)

1.000mol Mg

c)

481.7mol Mg

d)

0.8156mol Mg

3.

How many grams of Hydrogen are there in 25 moles of water?

a)

25

b)

450

c)

18

d)

50

4.

How many atoms are in 1.258 mol of calcium carbonate, CaCO3?

a)

7.576E23 atoms CaCO3

b)

7.577E23 atoms CaCO3

c)

8.974E23 atoms CaCO3

d)

6.576E23 atoms CaCO3

5.

A mole of carbon dioxide contains 6.02 x 1023 _____.

a)

atoms

b)

ions

c)

formula units

d)

molecules

6.

How many moles of copper are 4.57 x 1013 atoms of copper?

a)

7.59 x 1011 moles

b)

2.75 x 1037 moles

c)

7.59 x 10-11 moles

d)

2.75 x 1033 moles

7.

Determine the number of atoms in 2.50 moles of Zinc.

a)

4.15 x 10-24 atoms

b)

1.51 x 1024 atoms

c)

163 atoms

d)

2.71 x 10-22 atoms

8.

How many representative particles are in a mole?

a)

602

b)

602 million

c)

602 moles

d)

6.02 x 1023

9.

The number 6.02 x 1023 is called...(definition for mole)

a)

Obama's number

b)

Bohr's number

c)

Trump's number

d)

Avogadro's number

10.
1 mol = _____ g O2
a)
16
b)
32
c)
8
d)
24
11.

What is the relative molecular mass of CO2?

a)

44

b)

32

c)

16

d)

56

12.
How many moles are there in 8g of hydrogen molecules?
a)
8
b)
4
c)
16
d)
0.25
13.
How many moles are there in 440g of carbon dioxide molecules?
a)
11
b)
10
c)
16
d)
0.25
14.
What is the mass of 2.50 mol of oxygen gas O2?
a)
40 g
b)
80 g
c)
16 g
d)
32 g
15.
What is the molar mass of calcium hydroxide, Ca(OH)2?
a)
74.1 g/mole
b)
57.1 g/mole
c)
58.1 g/mole
d)
none of the above
16.
What is the mass in grams of 1.00 mole of O2 gas?
a)
11.2
b)
16.0
c)
22.4
d)
32.0
17.
What is the molar mass of H2O?
a)
16 g/mol
b)
18 g/mol
c)
16 amu
d)
18 amu
18.
A 1.0 mole sample of krypton gas has a mass of 
a)
19 g
b)
36 g
c)
39 g
d)
84 g
19.
Find the number of moles in 30 grams of H3PO4
a)
30 mol H3PO4
b)
0.31 mol H3PO4
c)
97 mol H3PO4
d)
3.26 mol H3PO4
20.
How many grams is 1.2 moles of Neon?
a)
0.05 grams
b)
16.6 grams
c)
21.2 grams
d)
24 grams
21.
How many moles is 4 grams of Calcium?
a)
0.10 moles
b)
10 moles
c)
44 moles
d)
160 moles
22.
How many moles are in 987g of Ra(OH)2
a)
38 moles Ra(OH)2
b)
30 moles (OH)2
c)
3.8 moles Ra(OH)2
d)
260 moles Ra(OH)2
23.
Calculate the mass of  5.0 mol of iron.
a)
8.3 x 10-24 g
b)
0.090 g
c)
3.0 x 1024 g
d)
280 g
24.
Which compound has the smallest molar mass?
a)
CO
b)
CO2
c)
H2O
d)
H2O2
25.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
26.
What is Avogadro's Number? 
a)
6.02 x 1023
b)
- 6.02 1023
c)
6.02 x 1022
d)
6,020,000,000,000
27.
How many moles are in 4.3 x 1024 molecules of H2O?
a)
6.02 x 1023
b)
7.14
c)
18.02
d)
128.66 
28.
What is the molar mass of NaCl?
a)
58.45g/mol
b)
28g/mol
c)
12g/mol
d)
6.02 x 1023
29.
How many moles are in 98.3 g of Aluminum Hydroxide (Al(OH)3)?
a)
2.14 mol
b)
1.26 mol
c)
6.63 mol
d)
5.9 mol
30.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
31.
How many grams are in 3.3 mol of Potassium sulfide (K2S)?
a)
360 g
b)
454 g
c)
238 g
d)
132 g
32.
How many grams of carbon are in 0.63 moles of carbon?
a)
3.79x1023 g C
b)
.0524 g C
c)
7.57 g C
d)
.800 g C
33.
How many molecules are in 3.6 grams of NaCl?
a)
0.06
b)
1.0x1021
c)
1.3x1026
d)
3.7x1022
34.
Copper (Cu) is a transition element used in the making of coins. Calculate the mass in grams of 0.0420 moles of copper.
a)
0.00697 g
b)
0.252 g
c)
2.67 g
d)
6.61 g
35.
How many atoms are in a 3.56 g sample of Cu?
a)
3.37 x 1022 Cu atoms
b)
6.02 x 1023 Cu atoms
c)
0.056 Cu atoms
d)
1 Cu atom
36.
How many oxygen molecules are in 3.36 L of oxygen gas (O2) at STP?
a)
0.150 mol O2
b)
2.02 x 1024 molecules O2
c)
2 molecules O2
d)
9.03 x 1022 molecules O2
37.
How many oxygen molecules are in 3.36 L of oxygen gas (O2) at STP?
a)
0.150 mol O2
b)
2.02 x 1024 molecules O2
c)
2 molecules O2
d)
9.03 x 1022 molecules O2
38.
You have 8.65 x 1025 atoms arsenic. How many grams do you have?
a)
144 g As
b)
10,765 g As
c)
107 g As
d)
None of these
39.
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
40.
How many Carbon atoms are in one mole of Carbon?
a)
6.02 x 1023
b)
1
c)
12
d)
not enough information
41.
How many moles are in 16.94g of water?
a)
16.94
b)
0.9403
c)
305.2
d)
1.063
42.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.050 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5.00 moles
43.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1024
b)
146
c)
4.15
d)
1.5x1024
44.

How many grams are in 3.3 mol of K2S?

a)

360 g

b)

450 g

c)

363 g

d)

454 g

45.

How many particles are in a mole?

a)

the molar mass

b)

22.4

c)

602 moles

d)

6.02 x 1023

46.

36.0 g of Be contains how many moles?

a)

0.25 mol

b)

4.0 mol

c)

45 mol

d)

320 mol

47.

What is the volume occupied by 1 mole of any gas?

a)

44.8 L

b)

22.4 L

c)

16.8 L

d)

20.4 L

48.

How many moles are in a 18 L tank of nitrogen gas (N2)?

a)

0.9 moles

b)

1 mole

c)

0.8 moles

d)

0.75 moles

49.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1024
b)
146
c)
4.15
d)
1.5x1024
50.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
51.
How many molecules are in 9.44 moles of AlCl3?
a)
5.68 molec AlCl3
b)
5.68x1024 molec AlCl3
c)
0.705 molec AlCl3
d)
1.25x1023 molec AlCl3
52.
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
53.

How many molecules are in 2.5 mol of NaCl?

a)

1.51x1023

b)

146

c)

4.15

d)

1.51x1024

54.
How many grams are inn 9.4 x 1025  molecules of H2
a)
1.98 g
b)
200g
c)
315g
d)
452g
55.

Which has more molecules?

a)

1 mole H2O

b)

1 mole CH4

c)

1 mole Cl2

d)

They're are all the same.

56.
How many grams are in 1.2 x 1024 atoms of C?
a)
28 grams
b)
24 grams
c)
6.02 grams
d)
1.2 grams
57.

How many grams are in 7.5 x 1023 molecules of H2SO4

a)

98.09 g H2SO4

b)

122g H2SO4

c)

45g H2SO4

d)

100g H2SO4

58.
A container with a volume of 893 L contains how many moles of air at STP?
a)
20003.2 L
b)
39.9 L
c)
22.4 L
d)
none of the choices
59.
How many grams are in 3.01 x 1022 atoms of magnesium?
a)
1.22 grams
b)
1.215 grams
c)
1.2 grams
d)
1.22x1046 grams
60.
How many liters are in 19.82 g Mg(OH)2? 
a)
10.75 liters
b)
10.7 liters
c)
7.615 liters
d)
7.62 liters
61.

How many grams are in

1.2 x 1024 atoms of C?

a)

23.94 grams C

b)

0.1659 grams C

c)

6.02 grams C

d)

2.394 X 1047 grams C

62.
How many atoms are in a 3.56 g sample of Cu?
a)
3.37 x 1022 Cu atoms
b)
6.02 x 1023 Cu atoms
c)
0.056 Cu atoms
d)
1 Cu atom
63.

How many grams are in 3.01 x 1022 atoms of magnesium?

a)

2.747 X 1046 grams

b)

1.215 grams

c)

2.747 grams

d)

1.22x1046 grams

64.

How many grams are in

1.2 x 1024 atoms of C?

a)

23.94 grams C

b)

0.1659 grams C

c)

6.02 grams C

d)

2.394 X 1047 grams C

65.
Given 10.00 grams of Al2(SO4)3, convert to molecules of Al2(SO4)3.
a)
2.06 x 1027 molecules
b)
1.76 x 1022 molecules
c)
4.85 x 10-26 molecules
d)
5.68 x 10-21 molecules
66.
Given 500.0 Liters of H2 gas, convert to molecules.
a)
6.74 x 1027 molecules H2
b)
1.86 x 10-20 molecules H2
c)
1.34 x 1025 molecules H2
d)
3.71 x 10-23 molecules H2
67.
Given 3.99 x 1022 molecules of Cl2 gas, convert to Liters.
a)
5.38 x 1047 Liters Cl2
b)
2.96 Liters Cl2
c)
1.07 x 1045 Liters Cl2
d)
1.48 Liters Cl2
68.

Given 1001.0 grams of Ar, convert to Liters of Ar.

a)

561 L Ar

b)

89600 L Ar

c)

17600 L Ar

d)

1.12 L Ar

69.

What is the mass of 78.5 liters of CO2 at STP?

a)

77387.184 g CO2

b)

154.23 g CO2

c)

3454.23 g CO2

d)

98.16 g CO2

70.

What is the volume of 135 grams of NH3?

a)

51528 L NH3

b)

0.3537 L NH3

c)

201.33 L NH3

d)

177.46 L NH3

71.

How many atoms of neon are found in 4.5 liters of neon?

a)

1.6744 X 10-22 atoms Ne

b)

1.67 X 1024 atoms Ne

c)

1.209 X 1023 atoms Ne

d)

6.068 X 1025 atoms Ne

72.

What is the volume of 4.5 X 1025 molecules of krypton?

a)

1674.42 L Kr

b)

3.337 L Kr

c)

1.67 X 1049 L Kr

d)

1.209 X 1048 L Kr

73.

What is the mass of oxygen gas in a 250 L tank?

a)

179200 g O2

b)

0.697 g O

c)

357.14 g O2

d)

178.57 g O

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