(A) How much heat is required to vaporize a 2.35 g sample of diethyl ether at 298 K?

(B) Calculate a more accurate answer to Example 12-2 by using Δ_vapH = 40.7 kJ mol^-1 for water at 100 °C, 85.0 °C as the temperature of the surface on which the steam condenses, and 4.21 J g^-1 °C^-1 as the average specific heat of H₂O(l) in the temperature range 85 to 100 °C.