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Mole Conversion Test

Total questions: 20

Worksheet time: 33mins

Name
Class
Date
1.

How many molecules are there in 7.85 moles of CO2?

a)

4.72x10^24 Molecules of CO2

b)

1.50x10^24 Molecules of CO2

c)

9.00x10^23 Molecules of CO2

d)

47.20 Molecules of CO2

2.

2.5 moles of H2 = __________ molecules of H2

a)

1.51 x 10^24 molecules of H2

b)

2.01 x 10^23 molecules of H2

c)

5.02 x 10^24 molecules of H2

d)

1.51 x 10^23 molecules of H2

3.

4.66 x 10^24 atoms Mg = __________ moles of Mg

a)

7.74 moles of Mg

b)

0.774 moles of Mg

c)

4.66 moles of Mg

d)

15.0 moles of Mg

4.

3.02 x 10^24 molecules H2SO4 = __________ moles of H2SO4

a)

5 moles of H2SO4

b)

0.5 moles of H2SO4

c)

0.05 moles of H2SO4

d)

50 moles of H2SO4

5.

5.00 mole H2O = __________ atoms of H

a)

3.01 x 10^24 atoms of H

b)

6.02 x 10^24 atoms of H

c)

1.20 x 10^24 atoms of H

d)

2.50 x 10^24 atoms of H

6.

3.50 mole NH₃ = __________ atoms of H

a)

6.32x10^24 Atoms of H

b)

2.11x10^25 Atoms of H

c)

1.05x10^25 Atoms of H

d)

3.50x10^23 Atoms of H

7.

How many atoms of Oxygen are there in 15.0 mole O₂?

a)

9.03 x 10^24 atoms of Oxygen

b)

1.81 x 10^25 atoms of Oxygen

c)

3.61 x 10^24 atoms of Oxygen

d)

2.71 x 10^25 atoms of Oxygen

8.

3.28 × 10²³ atoms Na = __________ moles of NaCl

a)

0.545 moles of NaCl

b)

0.273 moles of NaCl

c)

0.136 moles of NaCl

d)

0.054moles of NaCl

9.

24.0 g of Be contains how many moles?

a)

0.567 mol

b)

2.66 mol

c)

.24 mol

10.

How many moles are in 36 grams of H2O?

a)

2.0 moles

b)

1.0 mole

c)

0.5 moles

11.

How many moles of Carbon are present in 12 g of Carbon?

a)

1 mole of C

b)

2 moles of C

c)

0.5 moles of C

12.

What is the number of moles in 30 grams of lithium?

a)

1.0 moles

b)

208.2 moles

c)

4.3 moles

13.

What is the mass in grams of 5.5 moles of NaCl?

a)

520 grams

b)

339 grams

c)

319 grams

14.

What is the number of moles in 20 grams of calcium?

a)

0.6 moles

b)

.78 moles

c)

12 mole

15.

What is the number of molecules in 7.22 moles of AlCl3?

a)

4.35 molec AlCl3

b)

4.35x1024 molec AlCl3

c)

0.54 molec AlCl3

d)

9.56x1022 molec AlCl3

16.

What is the number of molecules in one mole of any substance, such as sugar (C6H12O6)?

a)

24 molecules

b)

180 molecules

c)

180 g

d)

6.02 x 1023 molecules

17.

How many moles are 5.70 x 1018 atoms of copper?

a)

.00000947 moles

b)

3.44 x 1042 moles

c)

3.44 x 10-42 moles

d)

9470000 moles

18.

What is the number of moles in 50 grams of water (H2O)?

a)

2.78 moles

b)

50 moles

c)

18.02 moles

d)

0.90 moles

19.

What is the molar mass of KOH?

a)

56 g/mole

b)

74 g/mole

c)

84 g/mole

20.

What is the molar mass of AuCl3 in grams per mole?

a)

96g/mol

b)

130g/mol

c)

303g/mol