Question

12. The piston in a car engine compresses a mixture of gasoline vapour and air from 700mL to

100mL during its compression stroke. The mixture before the compression stroke has a

pressure of 75.0kPa and a temperature of 120°C. What is the pressure in the cylinder after

the compression stroke when the temperature of the gas is 200°C?

A. 315kPa

B. 436kPa

C. 632kPa

D. 875kPa

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