How large a container, in liters, would you need to hold 7.2 kg of gasoline? (Take the density of gasoline to be 0.68 g/cm³.)

Volume = mass / density

V = 7200 / 0.68 (ensure units are consistent)

V = 10588 cm^3

=>approx 10600 cm^3

V = 10.6 litres

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"