Question

Regular gasoline produces 8.68 x 10⁷ Joules of heat per gallon when it is burned at approximately 450 Celsius. Assume that the car's engine is 18% efficient and that the outside temperature is 28 Celsius. If your car gets 24 miles per gallon of gas, by how much does the car's engine change the entropy of the world when you drive from Los Angeles to Las Vegas a distance of 270 miles?  

Group of answer choices

a) 2.66 MJ/K

b) 2.41 MJ/K

c) 3.25 MJ/K

d) 2.94 MJ/K

e) 2.07 MJ/K

Answer 1

Angwor- Given data 19 Energy produced = 8.68 x 10770148 94 3.61 X106 J energy expelled Ee = Ep (0.18) 0.64x10J change in entory of engine ASE = - Eplit 44993.08 Jhie chang in entroy of environmen ase Eelt = 1993.36 Ilk :. change in entropy AS: 1993.36 -4993.08 2999_13116 = 2.99 MI he