A 4.30 kg block of ice at 0.00 ∘C falls into the ocean and melts. The average temperature of the ocean is 3.55 ∘C, including all the deep water.
Part A:
By how much does the melting of this ice change the entropy of the world?
Part B:
Does it make it larger or smaller?
Part A)
m = mass of ice block = 4.30 kg
L = latent heat of melting = 334000 J/kg
Q = mL
Q = (4.30) (334000)
Q = 1436200 J
Ti = temperature of ice = 273 K
To = temperature of ocean = 3.55 + 273 = 276.55 K
change in entropy is given as
S
= Q/Ti - Q/To
S
= 1436200/273 - 1436200/276.55
S
= 67.5
B)
it makes it larger
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