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Mole Ratios
Test Description: This will assess students understanding of mole ratios and how they relate to scaling up (or down) a balanced equation.
Instructions: Answer all questions to get your test result.
1) What is the mole ratio of nitrogen to ammonia? N2 (g) + 3 H2 (g) yields 2 NH3 (g)
A
2 moles NH3/ 1 mole N2
B
1 moles N2/ 2 moles NH3
C
1 moles N2/ 3 moles H2
D
3 moles H2/ 2 moles NH3
2) What is the mole ratio of oxygen gas to carbon dioxide gas? C3H8 (l) + 5 O2 (g) yields 3 CO2 (g) + 4 H2O (g)
A
5 mole O2/ 1 moles C3H8
B
3 mole CO2/ 5 mole O2
C
5 mole O2/ 3 mole CO2
D
5 mole O2/ 4 mole H2O
3) What is the mole ratio of zinc to hydrogen gas? Zn (s) + 2 HCl (aq) yields ZnCl2 (aq) + H2 (g)
A
1 moles Zn/ 1 mole ZnCl2
B
1 mole Zn/ 1 mole H2
C
1 mole H2/ 1 mole Zn
D
1 moles Zn/ 2 mole HCl
4) How many moles of ammonia are produced from 0.60 moles of nitrogen? N2 (g) + 3 H2 (g) yields 2 NH3 (g)
A
1.2 moles H2
B
0.3 moles NH3
C
0.3 moles N2
D
1.2 moles NH3
5) How many moles of nitrogen are required to make 7.2 moles of ammonia? N2 (g) + 3 H2 (g) yields 2 NH3 (g)
A
14.48 moles N2
B
14.48 moles NH3
C
3.62 moles N2
D
3.62 moles NH3
6) How many moles of zinc will react with 12 moles of HCl? Zn (s) + 2 HCl (aq) yields ZnCl2 (aq) + H2 (g)
A
6 moles ZnCl2
B
6 moles Zn
C
24 moles zn
D
12 moles ZnCl2
7) How many moles of hydrogen will be produced from 0.86 moles of zinc? Zn (s) + 2 HCl (aq) yields ZnCl2 (aq) + H2 (g)
A
0.86 moles HCl
B
0.43 moles H2
C
0.86 moles H2
D
1.72 moles H2
8) How many moles of oxygen are required to react with 5.250 moles of propane? C3H8 (l) + 5 O2 (g) yields 3 CO2 (g) + 4 H2O (g)
A
10.50 moles H2O
B
13.13 moles of O2
C
2.100 moles O2
D
7.875 moles CO2
9) How many moles of water are produced when 1.50 moles of propane react with excess oxygen? C3H8 (l) + 5 O2 (g) yields 3 CO2 (g) + 4 H2O (g)
A
7.5 moles O2
B
2.7 moles H2O
C
4.5 moles CO2
D
6 moles H2O
10) How many moles of propane are required to react with 0.250 moles of oxygen? C3H8 (l) + 5 O2 (g) yields 3 CO2 (g) + 4 H2O (g)
A
1.25 moles C3H8
B
0.05 moles C3H8
C
0.02 moles C3H8
D
0.06 moles C3H8
*select an answer for all questions
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