Refrigerators make use of the heat absorption required to vaporize a volatile liquid. A fluorocarbon liquid being investigated to replace a chlorofluorocarbon has ΔvapHΘ = +32.0 kJ mol-1.Calculate q, w, ΔH, and ΔU when 2.50 mol is vaporized at 250 K and 750 Torr.

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