In the cylinder of a diesel engine, the piston compresses the air-fuel mixture a
ID: 2057167 • Letter: I
Question
In the cylinder of a diesel engine, the piston compresses the air-fuel mixture and does work on it. This work increases the internal energy of the mixture, and therefore heats it. The temperature attained by the compression is sufficient to ignite the mixture, without any need of a spark plug. How much work must the piston do on a parcel of gas, .022 mole, to heat it from 39 celcies to 791 celcius? Assume that the compression is so fast that the gas loses no heat to the surroundings, and assume the gas behaves like an ideal diatomic gas.Explanation / Answer
work must the piston do on a parcel of gas = W = -E = -344.1152 J -344 J