Question

**P-7:** A piece of ice at 0 ^{0}C is put
in 2.00 Kg of water at 20 ^{0}C. The equilibrium
temperature of the system becomes 5 ^{0}C.
(L_{f}=333 kJ/Kg, c_{w}=4186 J/Kg,
T_{K}=T_{C}+273.15)

**a)** Find the mass of ice?

Kg

**b)** Find the entropy change of ice?

J/K

**c)** Find the entropy change of water?

J/K

**d)** Find the total entropy change of sysem?

J/K

Answer #1

A piece of ice at 0 0C is put in 2.00 Kg of water at 20 0C.
The equilibrium temperature of the system becomes 5 0C. (Lf=333
kJ/Kg, cw=4186 J/Kg, TK=TC+273.15)
a) Find the mass of ice?
Kg
b) Find the entropy change of ice?
J/K
c) Find the entropy change of water?
J/K
d) Find the total entropy change of sysem?
J/K

1.2 kg piece of ice at 0 oC is thrown into a very large lake at
12 oC. Water: Lf = 334 kJ/kg c = 4.19 kJ/(kg Co)
A) What is the entropy change of the ice? deltaS = ???J/K
B) What is the total entropy change of the ice and lake system?
deltaS = ???J/K
I NEED NUMBERS PLEASE

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heat of fusion of water is 333 kJ/kg. What is the net entropy
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heat of fusion of water is 333 kJ/kg. What is the net entropy
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(b) What is the entropy change of just the ice only while it
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