How much heat is needed to turn 350 g of ether into vapor taken at a temperature of 15 degrees?

univerkov | December 1, 2020 | education

How much heat is needed to turn 350 g of ether into vapor taken at a temperature of 15 degrees? Specific heat of vaporization of ether is 0.4 MJ / kg. Boiling point of ether 35 degrees

Given: m = 350g = 0.35kg
T1 = 15 ° C
T2 = 35 ° C
r = 0.4MJ / kg = 0.4 * 10 ^ 6J / kg
c = 3340 J / (kg * ° C)
Find: Q general-?
Qtotal = Q1 + Q2
Q1 = cm (T2-T1)
Q2 = mr
Qtotal = cm (T2-T1) + mr
Qtotal = 3340 J / (kg * ° C) * 0.35kg * 20 ° C + 0.35kg * 0.4 * 10 ^ 6J / kg
Qtotal = 23380J + 140,000J = 163380J
Answer: 163380J

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