A motorcycle engine does work at a rate of about 6 kW while burning a liter of gasoline every 20 minutes.
(a) Given that the mass of one gasoline molecule is about 114 atomic mass units (1 amu = 1.66 × 10−27 kg), and the mass of a liter of gasoline is 0.7 kg, how many gasoline molecules are there in a liter?
(b) If each gasoline molecule releases 57 eV of energy upon oxidation, how much heat energy (in joules) is provided by burning one liter of gasoline?
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(c) How much work (in joules) is done altogether by the engine while it burns 1 liter of gasoline?
(d) What is the efficiency of this motorcycle engine?