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WorksheetsMulti-Step Stoichiometry
Total questions: 19
Worksheet time: 2hrs 55mins
Name
Class
Date
1.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
2.
SiO2 + 3C → SiC + 2CO
I need to add 8 moles of Carbon to the reaction. How many grams of Carbon should I weigh?
I need to add 8 moles of Carbon to the reaction. How many grams of Carbon should I weigh?
a)
96 g
b)
0.67 g
c)
2.67 g
d)
48 g
3.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
4.
Mole ratios are obtained from the
a)
balanced chemical equation
b)
periodic table
c)
molar mass
5.
What is the mole ratio of H2O to H3PO4 in the following chemical equation? P4O10 + 6 H2O --> 4 H3PO4
a)
6:4
b)
4:6
c)
1:3
d)
3:1
6.
In a chemical reaction, the mass of reactants ___.
a)
is less than the mass of products
b)
is greater than the mass of products
c)
has no relationship to the mass of products
d)
is equal to the mass of products
7.
Using the balanced equation in question 1,
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?
a)
5.00 g
b)
7.29
c)
182 g
d)
218 g
8.
Balance the following reaction :
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
a)
1,2,2,2
b)
1,2,1,1
c)
2,1,1,1
d)
2,1,2,1
9.
Using the balanced equation in question 5,
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
how many moles of Ca(OH)₂ would be produced if 3.5 moles of H₂O are consumed?
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
how many moles of Ca(OH)₂ would be produced if 3.5 moles of H₂O are consumed?
a)
1.75 moles
b)
7.0 moles
c)
3.5 moles
d)
11 moles
10.
Using the balanced equation in question 9,
C₂H₂(g) + O₂(g) --> CO₂(g) + H₂O(g)
How many moles of water (H₂O) are produced when 25.0 grams of C₂H₂ are consumed?
a)
0.960 moles
b)
0.480 moles
c)
1.92 moles
d)
3.84 moles
11.
1 N2 + 3 H2 → 2NH3
How many moles of hydrogen, H2, are needed to react with 2.00 mol of nitrogen, N2?
(a) mol N2 ÷ (b) mol N2 x (c) mol H2 = (d) mol H2
Choose from the below words
2.00
1
3
6
12.
Balance the following reaction:
(a) C + (b) H2 → (c) C3H8
Choose from the below words
3
4
1
2
5
13.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
14.
4 Al + 3 O2 –> 2 Al2O3 How much aluminum would be needed to completely react with 45 grams of O2?
a)
1.05 moles
b)
3.75 moles
c)
1.875 grams
d)
1.875 moles
15.
When 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant? C10H8 + 12 O2 --> 10 CO2 + 4 H2O
a)
Oxygen
b)
C10H8
c)
Water
d)
Carbon Dioxide
16.
B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
What mass of O2 will be needed to burn 36.1 g of B2H6?
a)
13.8 g O2
b)
3.86 mol of O2
c)
124 g O2
17.
2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
12.00 moles of NaClO3 will produce how many grams of O2?
a)
256 g of O2
b)
576 g of O2
c)
288 g O2
18.
2H2 + O2 → 2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2
b)
4
c)
6
d)
8
19.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
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