Gen chemistry question?

Diethyl ether (C4H10O) is a common solvent for organic synthesis. Since ether boils at 34.6 °C, it is usually stored in a freezer maintained at -70 °C. How much energy is required to bring 1.00 L of diethyl ether from a liquid at -70.0 °C to a gas at 50.0 °C? Density = 0.7134 g/mL, C (liquid) = 172.0 J/(mol*°C), ΔvapH° = 27.247 kJ/mol, C (gas) = 119.46 J/(mol*°C).