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Mass to Mole Conversion

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

How many steps are in a gram to molecule conversion?

a)

1

b)

2

c)

3

d)

4

2.

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

3.

How many steps are in a gram to mole conversion?

a)

1

b)

2

c)

3

d)

4

4.

Convert 86.235 g of diphosphorus pentaoxide to moles.

a)

12240 moles

b)

1.8747 moles

c)

.608 moles

d)

.60755 moles

5.

Which conversion factor should be used to solve the following, "How many moles are in 28 grams of CO2?"

a)

mol = 22.4 L 

b)

mol = 44.01 g

c)

mol = 6.02x1023 atoms

d)

more than one

6.

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

7.

Determine the mass of 4.20 moles of C6H12

a)

353 g

b)

0.0499 g

c)

337 g

d)

2.53 x 1024 g

8.

What is the mass of 0.89 mol of CaCl2?

a)

111 grams

b)

0.008 grams

c)

98.9 grams

d)

none of the choices

9.

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

a)

2879 moles

b)

8.291 moles

c)

.8291 moles

d)

.829 moles

10.

What is the first step in converting mass to moles?

a)

Determine the molar mass of the substance

b)

Divide the mass by Avogadro's number

c)

Multiply the mass by the molar mass

d)

Use the ideal gas law

11.

How many moles are in 50 grams of NaCl? (Molar mass of NaCl = 58.44 g/mol)

a)

0.855 moles

b)

1.146 moles

c)

0.428 moles

d)

1.000 moles

12.

Which of the following is the correct formula to convert mass to moles?

a)

Moles = Mass / Molar Mass

b)

Moles = Mass x Avogadro's Number

c)

Moles = Mass x Molar Mass

d)

Moles = Mass / Avogadro's Number

13.

If you have 10 grams of carbon dioxide (CO2), how many moles do you have? (Molar mass of CO2 = 44.01 g/mol)

a)

0.227 moles

b)

0.455 moles

c)

0.500 moles

d)

0.909 moles

14.

What is the mass of 2 moles of water (H2O)? (Molar mass of H2O = 18.02 g/mol)

a)

18.02 grams

b)

36.04 grams

c)

9.01 grams

d)

72.08 grams

15.

Which of the following statements is true about mass to mole conversion?

a)

It requires knowledge of the substance's molar mass

b)

It can be done without any calculations

c)

It is only applicable to gases

d)

It is the same as converting moles to mass