wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Mole Review

Total questions: 20

Worksheet time: 40mins

Name
Class
Date
1.

What is Avogadro's number?

a)

6.022 x 1023

b)

1 mole

c)

60.22 x 1023

d)

6.022

2.

How many moles are in 8.30 X 1023 molecules of H2O?

a)

1.378 X 1023 moles H2O

b)

1.378 moles H2O

c)

4.998 x 1047 moles H2O

d)

0.725 mole H2O

3.

How many molecules are there in 31.8 moles of water?

a)

5.281 x 10-23 molecules

b)

1.914 x 1025 molecules

c)

5.281 x 10-25 molecules

d)

1.893 x 1022 molecules

4.

What is the conversion factor that should be used to determine how many molecules are there in 4.00 moles of glucose, C6H12O6?

a)
b)
c)
d)
5.

How is moles abbreviated?

a)

M

b)

m

c)

mol

d)

ml

6.

What is the mass of AuCl3?

a)

196.967 g

b)

232.42 g

c)

214.227 g

d)

303.326 g

7.

What is the mass of 0.89 mol of CaCl2?

a)

110.984 grams

b)

0.008 grams

c)

124.701 grams

d)

98.775 gram

8.

Calculate the mass of 5.0 mol of iron.

a)

8.3 x 10-24 g

b)

11.186 g

c)

3.0 x 1024 g

d)

279.665 g

9.

How many moles are in 19.82 g Mg?

a)

1.226 mol Mg

b)

481.725 mol Mg

c)

1.000 mol Mg

d)

0.815 mol Mg

10.

What is the percent composition by mass of sulfur (S) in the compound MgSO4?

a)

20.22%

b)

19.85%

c)

26.64%

d)

28.64%

11.

What percent of Zn3(PO4)2 is zinc?

a)

33.15%

b)

16.04%

c)

50.80%

d)

19.68%

12.

Find the percent composition of CaCl2?

a)

Ca: 36.11%; Cl: 63.88%

b)

Ca: 53.12%; Cl: 100%

c)

Ca: 36.11%; Cl: 83.56%

d)

Ca: 46.11%; Cl: 63.88%

13.

What is the mass of 3.01 x 1022 atoms of magnesium?

a)

1.215 grams

b)

1.025 grams

c)

7.457 x 1023 grams

d)

7.457 x 1044 grams

14.

How many grams are in 7.4 X 1023 molecules of AgNO3?

a)

2.623 x 1045 grams

b)

169.872 grams

c)

208.743 grams

d)

138.239 grams

15.

How many atoms are in 13.5 grams of Beryllium?

a)

9.012 atoms

b)

2.02 x 1022 atoms

c)

4.020 x 1023 atoms

d)

9.021 x 1023 atoms

16.
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
a)
NO
b)
N2O3
c)
N2O4
d)
N2O5
17.
What is the empirical formula if you have 88.80% copper and 11.20% oxygen?
a)
Cu3O8
b)
CuO4
c)
Cu2O
d)
Cu4O10
18.

How many Carbon atoms are in one mole of Carbon?

a)

6.022 x 1023

b)

1

c)

12

d)

6

19.

How many moles are in 6.022 x 1023 molecules of H2O?

a)

1

b)

2

c)

6

d)

18

20.

Which of the following would have a greater mass?

a)

1 mole of Li

b)

1 mole of Au

c)

1 mole of Si

d)

All of these are equal