onsider a $$cold$$ winter day in Gainesville with an air temperature of $50$F and

relative humidity of about $20\%($moisture content $0\mathrm{.}001$ g H$2$O$/$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 $($molal humidity is $6\mathrm{.}7\%).$ The heat capacity of dry air is

$1\mathrm{.}05$ J$/$g$-$C$.$ Estimate the rate of heat loss by breathing in kcal$/$hr