What mass of oxygen is consumed when 2.9 g of C₃H₆O is burned in air?

Name: What mass of oxygen is consumed when 2.9 g of C 3 H 6 O is burned in air?
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Question

Quizplus · Accepted Answer

The balanced chemical equation for the combustion of C3H6O is: C3H6O + 4O2 → 3CO2 + 3H2O. The molar mass of C3H6O is 58 g/mol. Therefore, 2.9 g of C3H6O is 0.05 mol. According to the equation, 4 moles of O2 are required for 1 mole of C3H6O. Thus, 0.05 mol of C3H6O requires 0.2 mol of O2. The molar mass of O2 is 32 g/mol, so 0.2 mol of O2 is 6.4 g.

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