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Stoichiometry
Test Description: TEKS C.8ABG
Instructions: Answer all questions to get your test result.
1) Based on the unbalanced chemical equation of: NH3 + O2 = N2 + H2O, how many moles of N2 will be produced from 4.5 mol O2?
A
6.0 mol N2
B
12 mol N2
C
3.0 mol N2
D
4.5 mol N2
2) Given the reaction: H2SO4 + 2NaOH= Na2SO4 + 2H2O, how many grams of H2SO4 would be required to react with 0.75 mol of NaOH?
A
19 g H2SO4
B
110 g H2SO4
C
53 g H2SO4
D
37 g H2SO4
3) Given the reaction: H2SO4 + 2NaOH= Na2SO4 + 2H2O, what mass of water is formed from 0.75 mol of NaOH?
A
35 g H2O
B
0.62 g H2O
C
7.0 g H2O
D
14 g H2O
4) Given the reaction: 2H2 (g) + O2 (g)= 2H2O (g), how many moles of hydrogen would be required to produce 5.0 mol of water?
A
5.0 mol H2
B
5 mol H2
C
10. mol H2
D
10 mol H2
5) Given the reaction: 2H2 (g) + O2 (g)= 2H2O (g), how many liters of oxygen would be required to produce 5.0mol water at STP?
A
69 L O2
B
0.11 L O2
C
56 L O2
D
2.5 L O2
6) Sodium chloride is produced from its elements through a synthesis reaction. What mass of Na would be required to produce 25.0 mol of NaCl?
A
886 g NaCl
B
288 g NaCl
C
575 g NaCl
D
58.4 g NaCl
7) In the reaction: 2RbNO3= 2RbN + 3O2, how many moles of O2 are produced when 5.0 mol of RbNO3 decompose?
A
3.0 mol O2
B
1.0 mol O2
C
2.5 mol O2
D
7.5 mol O2
8) In the reaction: 2RbNO3= 2RbN + 3O2, how many grams of O2 are produced when 5.0 mol of RbNO3 decompose?
A
150 g O2
B
50.0 g O2
C
450 g O2
D
300 g O2
9) In the reaction: 2RbNO3= 2RbN + 3O2, how many liters of O2 are produced when 5.0 mol of RbNO3 decompose?
A
22.4 L O2
B
56 L O2
C
112 L O2
D
168 L O2
10) In the reaction: 2N2H4 + (CH3)2N2H2 + 3N2O4 = 6N2+ 2CO2 + 8H2O, how many moles of water are produced from 50.0 grams of N2H4?
A
6.25 mol H2O
B
400. mol H2O
C
32.4 mol H2O
D
113 mol H2O
*select an answer for all questions
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