This process is performed on saturated liquids like R22 before condensation and throttling steps in most air conditioners. This process is performed immediately before a spark plug ignites fuel in a four-stroke engine, (10[1])while it causes autoignition (-5[1])in diesel engines. Air undergoes this process (10[1])at every peak of a sound wave. (10[1]-5[2])The surroundings (10[1])do positive PV (10[1])work on the system in this process, (10[1])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 (10[1])follows an expansion step. For 10 points, name this process in which a gas is forced into a smaller volume. ■END■ (10[4])