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- 1. Multiple Choice
What is the molar mass of NaOH?
40.0 g/mol
38.9 g/mol
23.9 g/mol
57.0 g/mol
- 2. Multiple Choice
How many particles are in a mole?
602
602 million
602 moles
6.02 x 1023
- 3. Multiple Choice
How many moles are in 3.01 x 1023 atoms of magnesium?
0.5 moles
4.04 x 10-23 moles
7.31 x 1024 moles
2.0 moles
- 4. Multiple ChoiceHow many moles are in 19.82 g Mg?1.226 mol Mg481.7 mol Mg1.000 mol Mg0.8156 mol Mg
- 5. Multiple ChoiceCalculate the mass of 5.0 mol of iron.8.3 x 10-24 g0.090 g3.0 x 1024 g280 g
- 6. Multiple Choice
What is the mass in grams of 5.90 mol C8H18?
.0512 g
19.4 g
673 g
389 g
- 7. Multiple Choice
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many moles of Al2(SO4)3 would be formed if 6 moles H2SO4 completely reacted? 1 STEP
3 moles
2 moles
1 mole
0.5 moles
- 8. Multiple Choice
For the reaction represented by the equation
Cl2 + 2KBr → Br2 + 2KCl,
How many grams of potassium chloride can be produced from 356 grams potassium bromide? 3 STEPS
749 g
225 g
479 g
814 g
- 9. Multiple Choice
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of Fe can be made from 6 moles H2? 1 STEP
4 moles Fe
6 moles Fe
9 moles Fe
2 moles Fe
- 10. Multiple Choice
2 KClO3 → 2 KCl + 3 O2 How many moles of oxygen are produced when 16.7 grams of KClO3 decompose completely? 2 STEPS
0.136 moles O2
0.068 moles O2
0.204 moles O2
0.408 moles O2
- 11. Multiple Choice
2Na + 2H2O → 2NaOH + H2 How many moles of hydrogen are produced if 120 g of Na are available? 2 STEPS
10.43 moles H2
5.21 moles H2
2.61 moles H2
5.45 moles H2
- 12. Multiple Choice
SiO2 + 3C → SiC + 2CO
Using the balanced equation how many moles of Carbon monoxide would be produced from 6 moles of carbon? 1 STEP
112.0 mol CO
4.0 mol CO
28.0 mol CO
48.0 mol CO
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