32. IE •• An alcohol rub can rapidly decrease body (skin)

temperature.

(a) This is because of (1) the cooler temperature of the alcohol, (2) the evaporation of alcohol,

(3) the high specific heat of the human body.

(b) To decrease the body temperature of a 65-kg person by 1.0 °C, what mass of alcohol must be evaporated from their skin (consider evaporation only, ignore the heat to raise the alcohol to its boiling point, and treat the human body as, on average, water)?