usin$0\mathrm{.}1$ Using defined constants and conversion factors for mass, length, time, and temperature, calculate conversion factors for $($a$)$ foot$-$pounds force to kilowatt hours, $($b$)$ gallons $(1$gal$=231i{n}^3)$ to liters $)($c$)$ Btu per pound mole to joules per kilogram mole.