
stoichiometry
Authored by Jayson HS]
Chemistry
11th - 12th Grade

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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2H2 + O2 → 2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
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?
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
4 Al + 3 O2 –> 2 Al2O3 How much aluminum would be needed to completely react with 45 grams of O2?
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
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