Q= Q1 + Q2
Q1 = cm(T2 - T1) =4.184 *1.0*(100-67)= 138.072 J
Q2= ∆Hvap*n
n = m/M = 1.0 / 18.02 = 0.055 mol
Q2= 40700J /mol * 0.055 mol = 2239 J
Q = 138.072 J + 2239 J = 2377.072 J = 2.377 kJ
Answer: 2.377 kJ
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