Balancing Reactions and Mole to Mole Conversions
Authored by Juan Vallin
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10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 MgO → 2 Mg + 1 O₂ Using the balanced equation provided. How many moles of magnesium oxide (MgO) would you need to produce 3 moles of oxygen (O₂)?
3 mols MgO
6 mols MgO
2 mols MgO
4 mols MgO
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 C₆H₁₄ + 19O₂ → 12 CO₂ + 14 H₂O Using the balanced equation provided. How many moles of oxygen (O₂) would you need to produce 6 moles of carbon dioxide (CO₂)?
9.5 mols CO₂
6.5 mols CO₂
19 mols CO₂
12 mols CO₂
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 C₆H₁₄ + 19 O₂ → 12 CO₂ + 14 H₂O Using the balanced equation provided. How many moles of water (H₂O) would be produced if you had 4.5 moles of hexane (C₆H₁₄)?
63 mols H₂O
14.5 mols H₂O
31.5 mols H₂O
19 mols H₂O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine if the following reaction is balanced. ___MgO → __2_Mg + ___ O₂
yes
No
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What part of the equation (which formula) is incorrectly balanced? ___MgO → __2__Mg + ___ O₂
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The following equation has been incorrectly balanced. Select the formula(s) that have the wrong coefficient in front of them. ___2_ Al + __1__ O₂ → __2__ Al₂O₃
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance this equation:
P4+O2 --> P2O3
3 P4+ O2 --> 2 P2O3
P4+ O2 --> 2 P2O3
P4+ 2 O2 --> 3 P2O3
P4+ 3 O2 --> 2 P2O3
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