Round 3: Tossup 15

This process is performed on saturated liquids like R22 before condensation and throttling steps in most air conditioners. This process is performed immediately before (10[1])a spark plug ignites fuel in a four-stroke engine, (10[1]-5[1])while it causes autoignition in diesel engines. (10[1])Air undergoes this (10[1])process at every peak of a sound wave. (10[1])The surroundings do positive PV work on the system in this process, which occurs in the last two steps of the Carnot (“kar-NO”) cycle. This process, which increases pressure by Boyle’s law, is performed by lowering a piston and typically follows an expansion step. For 10 points, name this process in which a gas is forced into a smaller volume. ■END■ (10[1])

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