Homework Answers
32.
Correct option: C
Explanation:
Mass of CO2 produced = 88 g
Molar mass of CO2 = 44 g/mol
Moles of CO2 produced = mass of CO2 produced/molar mass of CO2
= 88 g/44 g
= 2 mol
From the balanced equation given, it is clear that 8 mol of CO2 is produced from 2 mol of butane
Therefore, 2 mol of CO2 is produced from = (2 mol x 2 mol)/8 mol = 0.5 mol of butane.
Molar mass of butane = 58.12 g/mol
Hence, the mass of butane must have reacted = 0.5 mol x 58.12 g/mol = 29 g
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