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Alex73 [517]
3 years ago
15

In a gasoline engine, fuel vapors are ignited by a spark. In a diesel engine, a fuel-air mixture is drawn in, then rapidly compr

essed to as little as 1/20 the original volume, in the process increasing the temperature enough to ignite the fuel-air mixture.
Part A
Explain why the temperature rises during the compression
Chemistry
1 answer:
Travka [436]3 years ago
5 0

Answer:

Here's what I get  

Explanation:

ΔE = q + w

The compression cycle is so fast that heat doesn't have time to enter or leave the cylinder.

Thus, q is constant.

When you compress the gas, you are doing work on it and increasing the internal energy (mostly kinetic) of its molecules.

Temperature is a measure of the average kinetic energy of the molecules, so the temperature rises during compression.

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