Stoichiometry

Stoichiometry

12th Grade

35 Qs

quiz-placeholder

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Stoichiometry

Stoichiometry

Assessment

Quiz

Chemistry

12th Grade

Hard

Created by

aphrodite Soliven

Used 10+ times

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35 questions

Show all answers

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
4
6
8

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?

3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol 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?

6.7 mol
1.0 mol
10.1 mol
4.5 mol

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?

5.2 g
2.6 g
690 g
45 g

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

 SiO2 + 3C → SiC + 2CO
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

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

2 NaClO3 (s) --> 2NaCl (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

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?

13.8 g O2
3.86 mol of O2
124 g O2

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