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10 questions
In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?
10/6
3/4
4/3
2/3
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
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