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Worksheets

Mass to Moles

Total questions: 25

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
What is the mass in grams of 5.90 mol C8H18?
a)
.0512 g
b)
19.4 g
c)
673 g
d)
389 g
2.
How many moles are in 19.82 g Mg? 
a)
1.226mol Mg
b)
481.7mol Mg
c)
1.000mol Mg
d)
 0.8156 mol Mg
3.

Determine the molar mass for carbon tetrachoride (CCl4)

a)

153.823 g/mol

b)

118.37 g/mol

c)

189.35 g/mol

d)

47.464 g/mol

4.

How many moles are in 1459 grams of Na?

a)

63.46 moles

b)

60.36 moles

c)

10 moles

d)

1 mole

5.

What is the molar mass of Al2S3?

a)

150.17 g/mol

b)

59.05 g/mol

c)

138.23 g/mol

d)

75.27 g/mol

6.

How many grams are in 0.523 mol of AlPO4?

a)

63.78 g

b)

38.68 g

c)

47.23 g

d)

55.43 g

7.

How many moles are in 100 g of carbon dioxide, CO2?

a)

2.27 mol

b)

2.36 mol

c)

3.51 mol

d)

1.49 mol

8.

A baker needs 6 g of baking soda for a recipe. The chemical formula for baking soda is NaHCO3. How many moles of baking soda is needed?

a)

0.071 mol

b)

0.167 mol

c)

0.273 mol

d)

0.214 mol

9.
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
10.
How many moles are in 19.82 g Mg? 
a)
1.226mol Mg
b)
481.7mol Mg
c)
1.000mol Mg
d)
 0.8156 mol Mg
11.

How many moles are in 1459 grams of Na?

a)

63.46 moles

b)

60.36 moles

c)

10 moles

d)

1 mole

12.

What is the molar mass of one mole of HCl?

a)

79.92 grams per mole of HCl

b)

36.46 grams per mole of HCl

c)

35.45 grams per mole of HCl

d)

1.01 grams per mole of HCl

13.

How many moles are in 98.3 g of Aluminum Hydroxide (Al(OH)3)?

a)

78.0 mol

b)

1.30 mol

c)

6.60 mol

d)

5.90 mol

14.

How many moles are in 20g of potassium (K)?

a)

782 mol

b)

512 mol

c)

0.512 mol

d)

0.023 mol

15.

Find the mass of 11.37 mol of BaO. Round to the nearest whole number.

a)

1,354 g

b)

1,740 g

c)

17.40 g

d)

1,684 g

16.

Determine the number of moles of AlNO3 that are in 264 g of the compound.

a)

2.97 mol

b)

3.45 mol

c)

2.73 mol

d)

1.86 mol

17.

Find the mass of 5.82 mol of MgCl2. Round to the nearest tenth.

a)

552.9 g

b)

436.8 g

c)

55.2 g

d)

555.9 g

18.

Find the mass of 3.8 mol of H2O. Round to the nearest tenth.

a)

57.9 g

b)

54.8 g

c)

68.4 g

d)

62.3 g

19.

Determine the number of moles of Mg3P2 that are in 583 g of the compound.

a)

2.9 mol

b)

6.1 mol

c)

4.3 mol

d)

1.7 mol

20.

Find the mass of 3.6 mol of Au.

a)

843.6 g

b)

709.2 g

c)

435.9 g

d)

196.9 g

21.

Determine the number of moles of KNO3 that are in 784 g of the compound.

a)

7.7 mol

b)

6.9 mol

c)

10.6 mol

d)

7.8 mol

22.

How many molecules of AlCl3 are in 9.44 moles of AlCl3?

a)

5.68 molecules

b)

5.68x1024 molecules

c)

0.705 molecules

d)

1.25x1023 molecules

23.

Which of the following statements regarding the mole is INCORRECT?

a)

A mole is a unit of quantity equal to 6.02 x 1023 particles.

b)

The number of particles in a mole is known as Avogadro’s number.

c)

A mole of particles of an element is numerically equal to the atomic mass of the element.

d)

none of the above

24.

The mass of one mole of an element is equal to

a)

its atomic number from the periodic table, but in amus.

b)

its atomic mass from the periodic table, but in amus.

c)

its atomic mass from the periodic table, but in grams.

d)

its atomic number from the periodic table, but in grams.

25.

Shivani measures out 6.0 moles of epsom salt (MgSO4) to put in her bath. How many grams of MgSO4 went in the bath?

a)

3.6 x 1024 g

b)

720 g

c)

0.050 g

d)

340 g