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Worksheets

Mole

Total questions: 12

Worksheet time: 3hrs 0mins

Name
Class
Date
1.
What is the molar mass of Mg3N2?
a)
191.6 g/mol
b)
76.64 g/mol
c)
38.32 g/mol
d)
100.95 g/mol
2.
How many moles of carbon atoms are there in 5g of carbon?
a)
60 mol
b)
17 mol
c)
0.42 mol
d)
7 mol
3.

How many atoms are there in 5.9 moles of NaCl?

a)

3.5x1024atoms

b)

9.79x10-24atoms

c)

1.02x1023atoms

4.
How many moles are there in 12.7g of CaF2?
a)
0.20 mol
b)
1,000.76 mol
c)
6.14 mol
d)
0.16 mol
5.
How many moles of (NH4)2O are present in 74.9 g?
a)
3,907.0  moles
b)
1.44 moles
c)
8.67x1023moles
d)
0.79 moles
6.

What is the mass of 54.3x1045atoms of BeO?

a)
3.27x1070 g
b)
9.01 x1022g
c)
2.25 x1024 g
d)
1.31 x1069g
7.

What is the molar mass of PbSO4?

a)

303.27 g/mol

b)

255.27 g/mol

c)

163.87 g/mol

d)

372.27 g/mol

8.

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

9.

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

10.

Calculate the number of atoms in 0.0340 g Zn.

a)

5.20 x 10-4 atoms Zn

b)

3.13 x 1023 atoms Zn

c)

3.13 x 1020 atoms Zn

d)

2.05 x 1022 atoms Zn

11.

What is the molar mass of table salt (NaCl)? Read all options! Be careful!

a)

58.44 amu

b)

35.45 g/mol

c)

22.99 g/mol

d)

58.44 g/mol

12.

To melt the ice, Juan throws 455 g of calcium chloride, CaCl2 on his sidewalk. How many moles of CaCl2 did he throw?

a)

50,500 moles

b)

4.10 moles

c)

7.56 x 10-22 moles

d)

111 moles