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Mole to Mass Conversion

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

If an atom of Fluorine has an atomic mass of 19 amu, it has a Molar mass of ____

a)

19 lbs.

b)

19 kg

c)

How am I supposed to know?

d)

19 g/mol

2.

What are the units for molar mass?

a)

grams

b)

amu

c)

grams/mole

d)

liters

3.

48.86 g of cobalt is equal to how many moles of cobalt?

a)

1319 moles

b)

1.8 moles

c)

0.829 moles

d)

1.2 moles

4.

How many moles are in 32 grams of Oxygen (O)?

a)

3

b)

2

c)

1

d)

4

5.

How many grams of water (H 2_2 O) are in 2 moles?

a)

18 g

b)

36 g

c)

72 g

d)

144 g

6.

What is the mass of one mole of silver?

a)

32.06 g

b)

107.87 g

c)

14.01 g

d)

22.99 g

7.

When converting a moles to mass, what unit must be in the denominator of the conversion factor?

a)

grams

b)

moles

c)

grams/mole

8.

Convert 50.0 grams of H2O to moles of H2O.

a)

901 moles

b)

18.02 moles

c)

2.77 moles

9.

What mass of calcium chlorate, Ca(ClO3)2, is equivalent to 0.750 moles of the substance?

a)

155.24 grams

b)

206.98 grams

c)

128.65 grams

10.

2.50 moles of sodium sulfate, Na2SO4, are added to a solution. What mass of the substance was this?

a)

297.65 grams

b)

142.05 grams

c)

355.13 grams

11.

3.0 moles of sodium hydroxide, NaOH, is equal to what mass?

a)

about 40 grams

b)

about 23 grams

c)

about 120 grams

12.

When converting a mass to moles, what unit must be in the denominator of the conversion factor?

a)

grams

b)

moles

c)

grams/mole

13.

176 grams of carbon dioxide, CO2, is equal to how many moles of the substance.

a)

about 44 moles

b)

about 4 moles

c)

about 1 mole

14.

How many sigfigs should be in your answer to: How many grams of water are formed from 4.0 moles of hydrogen?

a)

1

b)

2

c)

3

d)

4

15.

Which molar mass should be used in this conversion: How many grams of magnesium react with 4.5 moles of chlorine to produce magnesium chloride?

a)

magnesium chloride

b)

magnesium

c)

chlorine

d)

no molar mass used.

16.

the units for molar mass always is per _____

a)

1 mole

b)

2 moles

c)

the coefficient on the compound number of moles

17.

What is the mass of 3 moles of carbon dioxide (CO2)?

a)

132 g

b)

44 g

c)

88 g

d)

66 g

18.

How many grams are in 1 mole of water (H2O)?

a)

18 g

b)

36 g

c)

9 g

d)

72 g

19.

If you have 2 moles of sodium chloride (NaCl), what is the mass?

a)

58.44 g

b)

116.88 g

c)

29.22 g

d)

232 g

20.

What is the molar mass of glucose (C6H12O6)?

a)

180 g/mol

b)

90 g/mol

c)

360 g/mol

d)

45 g/mol

21.

Convert 100 grams of sulfuric acid (H2SO4) to moles.

a)

1.02 moles

b)

0.98 moles

c)

2.04 moles

d)

0.51 moles

22.

What is the mass of 0.5 moles of ammonia (NH3)?

a)

8.5 g

b)

17 g

c)

34 g

d)

4.25 g

23.

How many moles are in 200 grams of calcium carbonate (CaCO3)?

a)

2 moles

b)

1 mole

c)

0.5 moles

d)

4 moles

24.

What is the mass of 4 moles of oxygen gas (O2)?

a)

128 g

b)

64 g

c)

32 g

d)

256 g

25.

If you have 5 moles of methane (CH4), what is the mass?

a)

80 g

b)

16 g

c)

64 g

d)

100 g