20.57:
The much larger mass of water suggests that the final state of the system will be
water at a temperature between
C.
0
.
60
and
C
0
°
°
This temperature would be
(
29
(
29 (
29
(
29
(
29 (
29
(
C,
83
.
34
)
K
kg
J
4190
)(
kg
650
.
0
(
)
kg
J
10
334
C
0
.
15
K
kg
J
2100
kg
0500
.
0
C
0
.
45
K
kg
J
4190
kg
0.600
3
°
=
⋅
×
+
°
⋅

°
⋅
=
T
keeping an extra figure. The entropy change of the system is then
⋅
=
∆
318.15
307.98
K)ln
kg
J
kg)(4190
(0.600
S
K.
J
5
.
10
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