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17-06-2015
Chemistry

contestada

What mass of oxygen is needed to combust and produced 6.4 moles of carbon dioxide gas?

C8H12 + 11O2= 8CO2 + 6H2O

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lulu1991 lulu1991

17-06-2015

You have already gotten the balanced equation. And the ratio of mol number of reactants and production is the ratio of coefficient. So there is 6.4/8*11=8.8 mol oxygen needed. The mass is 8.8*32=281.6 g.

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