Mole and Stoichiometry worksheet

MOLES AND STOICHIOMETRY
WORKSHEET




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M 1) MOLES AND STOICHIOMETRY WORKSHEET 1
What is the mass of one mole of each of the following compound? (Show all working)
A) Carbon dioxide (CO2)
O B) Silicon (IV) oxide (SiO2)
C) Methane (CH4)
D) Hydrogen Chloride (HCL)

O E) Sodium Chloride (NaCl)
F) Aluminium Oxide (Al2O3)
G) Ethane (C2H6)

S 2) How Many Moles are in each of the following? (show all working)
A) 36 g of Carbon atoms
B) 112 g of Iron atoms
A C)
D)
60 g of Neon atoms
3.5 g of Copper atoms
E) 0.2 g of Helium atoms



3) Find out the mass of each of the following? (show all working)
A) 4 moles of Aliminium atoms
B) 2 moles of Carbon atoms

B C)
D)
5 moles of Magnesium atoms
0.5 moles of Silicon atoms

H E) 0.002 moles of Copper atoms



4) Find out the number of moles present in each of the following gases (all measure at
r.t.p)
A) 240 cm3 Ammonia
B) 120 cm3 Chlorine
C) 600 cm3 of Oxygen
D) 24 cm3 of Carbon dioxide

K E) 2.5 dm3 of Sulphur dioxide



H
A
N
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MOLES AND STOICHIOMETRY WORKSHEET 1 ANSWERS
1 A) 44 g B) 60 g C) 16 g D) 36.5 g E) 58.5 g F) 102 g G)30 g
M
2 A) 3 mol B) 2 mol C) 3 mol D) 0.054 mol E) 0.05 mol O
3 A) 108 g B) 24 g C) 120 g D) 14 g E) 0.128 g O
4 A) 0.01 B) 5 x 10-3 C) 0.025 D) 1.0 x 10-3 E) 0.1 S
5 A) 2.4 dm3 B) 48 dm3 C) 12 dm3 A
6 A) 5 mol


7 26.66 g


8 80 g
B
9 0.015 g H
10 66.66 g




K
H
A

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M 1) MOLES AND STOICHIOMETRY WORKSHEET 2
Find out the mass of sulphur dioxide if 90 g of sulphur is burnt in excess of oxygen

O S + O2 SO2



O
S 2) Find out mass of calcium chloride if 200 g of calcium carbonate is reacted with excess
of hydrochloric acid?

CaCO3 + 2HCl CaCl2 + CO2 + H2O
A


3) Find out the volume of cabon dioxide if 150 g of calcium carbonate is treated excess
of hydrochloric acid?


B CaCO3 + 2HCl CaCl2 + CO2 + H2O


H
4) Find out the mass of water produced if 2.5 moles of oxygen are reacted with excess of
hydrogen?

2H2 + O2 2H2O


K
H
A
N
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