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Q6.7.4: Mole Conversion Quiz (Paper Version)

Total questions: 20

Worksheet time: 16mins

Name
Class
Date
1.

What is the molar mass of water (H 2_2 O)? (Atomic masses: H = 1 g/mol, O = 16 g/mol)

a)

17 g/mol

b)

18 g/mol

c)

16 g/mol

d)

20 g/mol

2.

How many moles are there in 50 grams of NaCl? (Molar mass of NaCl = 58.5 g/mol)

a)

0.85 moles

b)

0.95 moles

c)

1.2 moles

d)

0.75 moles

3.

Using dimensional analysis, convert 24 grams of carbon (C) to moles. (Atomic mass of C = 12 g/mol)

a)

1 mole

b)

2 moles

c)

0.5 moles

d)

3 moles

4.

Calculate the molar mass of glucose (C 6_6 H 12_{12} O 6_6 ). (Atomic masses: C = 12 g/mol, H = 1 g/mol, O = 16 g/mol)

a)

180 g/mol

b)

160 g/mol

c)

176 g/mol

d)

190 g/mol

5.

If you have 3 moles of nitrogen gas (N 2_2 ), how many grams of nitrogen do you have? (Molar mass of N 2_2 = 28 g/mol)

a)

84 g

b)

56 g

c)

24 g

d)

76 g

6.

What is the result of converting 200 grams of calcium carbonate (CaCO 3_3 ) to moles? (Molar mass of CaCO 3_3 = 100 g/mol)

a)

1 mole

b)

2 moles

c)

0.5 moles

d)

3 moles

7.

Using dimensional analysis, how many grams are there in 0.2 moles of sulfuric acid (H 2_2 SO 4_4 )? (Molar mass of H 2_2 SO 4_4 = 98 g/mol)

a)

19.6 g

b)

20 g

c)

18 g

d)

16 g

8.

Calculate the molar mass of magnesium chloride (MgCl 2_2 ). (Atomic masses: Mg = 24 g/mol, Cl = 35.5 g/mol)

a)

95 g/mol

b)

90 g/mol

c)

85 g/mol

d)

100 g/mol

9.

How many moles are in 22 grams of argon (Ar)? (Molar mass of Ar = 40 g/mol)

a)

0.45 moles

b)

0.55 moles

c)

0.65 moles

d)

0.75 moles

10.

Using dimensional analysis, convert 120 grams of potassium sulfate (K 2_2 SO 4_4 ) to moles. (Molar mass of K 2_2 SO 4_4 = 174 g/mol)

a)

0.69 moles

b)

0.59 moles

c)

0.79 moles

d)

0.89 moles

11.

What is the molar mass of ammonium nitrate (NH 4_4 NO 3_3 )? (Atomic masses: N = 14 g/mol, H = 1 g/mol, O = 16 g/mol)

a)

80 g/mol

b)

70 g/mol

c)

90 g/mol

d)

60 g/mol

12.

If you have 0.5 moles of iron (Fe), how many grams of iron do you have? (Molar mass of Fe = 56 g/mol)

a)

28 g

b)

18 g

c)

38 g

d)

48 g

13.

Using dimensional analysis, how many grams are there in 2 moles of acetic acid (CH 3_3 COOH)? (Molar mass of CH 3_3 COOH = 60 g/mol)

a)

120 g

b)

100 g

c)

140 g

d)

160 g

14.

Calculate the molar mass of sodium phosphate (Na 3_3 PO 4_4 ). (Atomic masses: Na = 23 g/mol, P = 31 g/mol, O = 16 g/mol)

a)

164 g/mol

b)

142 g/mol

c)

158 g/mol

d)

180 g/mol

15.

How many moles are in 150 grams of aluminum sulfate (Al 2_2 (SO 4_4 ) 3_3 )? (Molar mass of Al 2_2 (SO 4_4 ) 3_3 = 342 g/mol)

a)

0.44 moles

b)

0.34 moles

c)

0.54 moles

d)

0.24 moles

16.
Question Image

Match the following...

a)

You convert moles to grams by...

1.

multiplying by the molar mass

b)

You convert liters to moles by...

2.

dividing by 22.4L

c)

You convert moles to particles by...

3.

multiplying my avagadro's constant

d)

You convert grams to moles by...

4.

dividing by the molar mass

e)

You convert moles to liters by...

5.

multiplying by 22.4L

17.

At STP, 1 mol of gas has a volume of

a)

34L

b)

22.4L

c)

60L

d)

0.6L

18.

Determine the volume, in liters, of 1.2 mole SO2 gas at STP.

a)

13 L

b)

26 L

c)

6.5 L

19.

How many molecules are in 2.5 mol of NaCl?

a)

1.51x1023

b)

146

c)

4.15

d)

1.51x1024

20.

Determine the volume, in liters, of 1.2 mole SO2 gas at STP.

a)

13 L

b)

26 L

c)

6.5 L