Problem Answer

After writing and balancing the equation, the C8H18 : O2 molar ratio is 1 : 12.5. The correct answer is therefore 12.4 moles of oxygen.


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Calculate Stoichiometry Expression

Writing A Thermochemical Equation


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Problem


The combustion of one mole of octane (C8H18) produces 1300 kilocalories. Write the balanced equation for the combustion of octane. Based on this equation, how many moles of oxygen gas (O2) will be consumed when the combustion of a sufficient quantity of octane produces 1290 kilocalories?

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