2. Consider a cold winter day with an air temperature of 5 C and relative humidity of about 20% (moisture content 0.001 g HO/g dry air). A person waiting at a bus stop inhales at an average rate of 7 g dry air/min and exhales air saturated with water at body temperature (37 C) and 1 atm. The heat capacity of dry air is 1.05 J/(g C). Estimate the rate of heat loss by breathing in kcal/hr