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WorksheetsStoichiometry Exercises 10° - 2020
Total questions: 10
Worksheet time: 3hrs 30mins
Based on the following reaction
2 H2 + O2 → 2 H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
2
4
6
8
Based on the following reaction
3 Mg + Fe2O3 → 3 MgO + 2 Fe
What is the ratio of moles of MgO to moles Fe?
3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol Fe
Based on the following reaction
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
6.7 mol
1.0 mol
10.1 mol
4.5 mol
Based on the following reaction
2 Na + 2 H2O → 2 NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
5.2 g
2.6 g
690 g
45 g
Based on the following reaction
SiO2 + 3 C → SiC + 2 CO
I need to add 8 moles of carbon to the reaction. How many grams of carbon should I weigh?
96 g
0.67 g
2.67 g
48 g
Based on the following reaction
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
749 g
223 g
479 g
814 g
Based on the following reaction
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
13.7 mol
2.75 mol
6.11 mol
6.85 mol
Based on the following reaction
2 NaClO3 (s) → 2 NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
256 g of O2
576 g of O2
288 g O2
144 g O2
Based on the following reaction
B2H6 + 3 O2 → 2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
13.8 g O2
3.86 mol of O2
124 g O2
1.43 mol of O2
Based on the following reaction
4 Al + 3 O2 → 2 Al2O3
How much aluminum would be needed to completely react with 45 grams of O2?
1.05 moles
3.75 moles
1.875 grams
1.875 moles
