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Gram To Gram Problems
Test Description: This will assess the students understanding of using more than one conversion factor to solve a problem. All problems include a mole ratio.
Instructions: Answer all questions to get your test result.
1) How many grams of water will be produced from 100 grams of hydrogen gas? 2 H2 (g) + O2 (g) → 2 H2O (l)
A
900 g H2O
B
45 g H2O
C
90 g H2O
D
3.6 g H2O
2) How many grams of H3PO4 are required to react with 100 grams of Ca(OH)2? H3PO4 (aq) + 3 Ca(OH)2 (aq) → Ca3(PO4)2 (aq) + H2O (l)
A
39.2 grams H3PO4
B
44.1 grams H3PO4
C
51.5 grams H3PO4
D
33.3 grams H3PO4
3) How many grams of sodium are required to react with 10.0 grams of chlorine gas? 2 Na + Cl2 → 2 NaCl
A
6.49 grams Na
B
3.24 grams Na
C
12.9 grams Na
D
16.5 grams NaCl
4) How many grams of ammonia are produced when 5.4 grams of hydrogen reacts with excess nitrogen? N2 (g) + 3 H2 (g) → 2 NH3 (g)
A
30.6 grams NH3
B
68.9 grams NH3
C
36.7 grams NH3
D
96.8 grams NH3
5) How many grams of nitrogen are required to react with 35.62 grams of hydrogen? N2 (g) + 3 H2 (g) → 2 NH3 (g)
A
332.45 grams N2
B
1496 grams N2
C
166.2 gram N2
D
0.848 grams N2
6) What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium? Mg (s) + 2H2O (l) → Mg(OH)2 + H2
A
0.779 g H2
B
0.389 g H2
C
38.9 g H2
D
57.5 g H2
7) Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid according to the balanced equation: 2Al + 6HCl → 2 AlCl3 + 3 H2
A
1.5 grams H2
B
2.0 grams H2
C
6.0 grams H2
D
3.0 grams H2
8) How many grams of nitric acid, HNO3, can be prepared from the reaction of 138 g of NO2? 3NO2 + H2O → 2HNO3 + NO
A
126 grams HNO3
B
189 gram HNO3
C
279 grams HNO3
D
108 grams HNO3
9) How many grams of CaC2 can be produced from the reaction of excess calcium oxide and 10.2 g of carbon? CaO + 3C → CaC2 + CO
A
19.8 g CaC2
B
18.1 g CaC2
C
20.8 g CaC2
D
28.4 g CaC2
10) What mass of ZnCl2 can be prepared from the reaction of 3.30 grams of HCl? Zn +2HCl → ZnCl2 + H2
A
6.02 grams ZnCl2
B
6.82 grams ZnCl2
C
6.46 grams ZnCl2
D
6.17 grams ZnCl2
*select an answer for all questions
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