Dr. Boyle's
Mole Calculation Worksheet

(C) - Copyright, February 2000
With answers 6 MAR 2000

Chemical name Formula Molar Mass moles of element
in
one mole of substance 		Given X# of moles
------
mass X moles =
------
moles of element
in X moles
water H2O 18.02 g 2 moles H
1 mole O 		3 moles
---
54.06 g
---
6 moles H
3 moles O
glucose C6H12O6 180.0 g 6 moles C
12 moles H
6 moles O		 4 moles
---
720.0 g
---
24 moles C
48 moles H
24 moles O
carbon dioxide CO2 44.0 g 1 mole C
2 moles O		 5 moles
---
220.0 g
---
5 moles C
10 moles O
ammonia NH3 17.0 g 1 mole N
3 moles H		 15 moles
---
255.0 g
---
15 moles N
45 moles H
acetic acid
(vinegar) 		CH3COOH
C2H4O2
CH3CO2H		 60.0 g 2 moles C
4 moles H
2 moles O		 11 moles
---
660.0 g
---
22 moles C
44 moles H
22 moles O
Aluminum phosphate AlPO4 122.0 g 1 mole Al
1 mole P
4 moles O		 7 moles
---
854.0 g
---
7 moles Al
7 moles P
28 moles O
gypsum CaSO4.2H2O 172.0 g 1 mole Ca
1 mole S
6 moles O
4 moles H		 2 moles
---
344.0 g
---
2 moles Ca
2 moles S
12 moles O
8 moles H

Problems to work on

Chemical name Formula Molar Mass moles of element
in
one mole of substance 		Given X# of moles
------
mass X moles =
------
moles of element
in X moles
hydrogen peroxide H2O2 34 g 2 moles H
2 moles O 		3 moles
---
102 g
---
6 moles H
6 moles O
octanol C8H18O 130 g 8 moles C
18 moles H
1 moles O		 6 moles
---
780 g
---
48 moles C
108 moles H
6 moles O
carbon disulfide CS2 76 g 1 mole C
2 moles S		 5 moles
---
380 g
---
5 moles C
10 moles S
ammonium hydroxide NH4OH 35 g 1 mole N
5 moles H
1 moles O		 15 moles
---
525 g
---
15 moles N
75 moles H
15 moles O
ethanol CH3CH2OH 46 g 2 moles C
6 moles H
1 moles O		 11 moles
---
506 g
---
22 moles C
66 moles H
11 moles O
Aluminum perchlorate Al(ClO4)3 325.35 g 1 mole Al
3 mole Cl
12 moles O		 7 moles
---
2277.45 g
---
7 moles Al
21 moles Cl
84 moles O
caliche CaCO3 100 g 1 mole Ca
1 mole C
3 moles O		 2 moles
---
200 g
---
2 moles Ca
2 moles C
6 moles O