When a suspected drunk driver blows 186 mL of his breath through the fuel-cell breathalyzer, the breathalyzer produces an average of 325 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 25 âC, what percent (by volume) of the driver's breath is ethanol?

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All volume answers should be in the units of Pascals or kiloPascals, all volumes should be in Liters, all temperatures should be in Kelvin, all masses in grams, all densities in g/L, molar masses in g/mol, etc.

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