On a winter day, a certain house loses 5.00×1085.00×108 J of heat from the warm 20°C interior to the cold 7°C exterior.

[answerhappygod]

On a winter day, a certain house
loses 5.00×1085.00×108 J of heat from the warm
20°C interior to the cold 7°C exterior.
a) What is the change in entropy of the interior air of
the house?
ΔShouse = _____ J/K
b) What is the change in entropy of the surrounding
exterior air?
ΔSsurroundings = _____
J/K
c) What is the overall change in entropy of the universe
due to this heat exchange?
ΔSuniverse = _____ J/K
d) If a Carnot engine had been connected between the
inside and outside of the house to mediate the heat transfer, how
much work could it have done?
Wlost = _____ J
e) What would the efficiency of this engine be?
% efficiency = _____ %