Question

A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work? (kg)

Answer 1

T1=273+170=443 K
T2=273+23=296 K
efficiency =(Q1-Q2)/Q1 =W/Q1
efficiency =(T1-T2)/T1
W/Q1 = (T1-T2)/T1
Q1=W•T1/(T1-T2)
Q1= r•m
r= 333•10⁵ J/kg
W•T1/(T1-T2) =r•m
r= W•T1/(T1-T2)•m=...

Answer 2

m = W•T1/(T1-T2)• r =...