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Stoichiometry Practice

Total questions: 7

Worksheet time: 23mins

Name
Class
Date
1.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from  6 moles H2
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
2.

2H2   +   O2  →  2H2O
How many moles of H2O can be produced if 8 moles H2 are used?

a)
4 moles
b)
8 moles
c)
16 moles
d)
2 moles
3.

2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)  
12.00 moles of NaClO3 will produce how many grams of O2 (molar mass 32.00g/mol)?

a)
256 g of O2
b)
576 g of O2
c)
288 g O2
4.

2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of Al2(SO4)3 would be formed if 250g H2SO4 completely reacted?

a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
5.

Using the following equation:
4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(l)
How many grams of O2 (molar mass 32.00 g/mol) are needed to react with 56.8 grams of NH3 (17.03 g/mol)?

a)
45.08 g O2
b)
133.33 g O2
c)
260.77 g O2
d)
75.92 g O2
6.

2Al + 6HCl --> 2AlCl3 + 3H2

Aluminum reacts with hydrochloric acid (HCl). How many grams of aluminum are necessary to produce 11 L of H2 gas at STP?

a)

13

b)

8.8

c)

0.99

d)

1.0

7.

1Mg + 2H2O --> Mg(OH)2 + H2

What volume, in liters, of H2 will be produced at STP by the reaction 67.3 g of Mg (molar mass 24.31 g/mol)?

a)

62.0 L

b)

0.12 L

c)

2.77 L

d)

1.15 L