A 39 g ice cube at -69°C is placed in a lake whose temperature is 65°C....

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Answer 1

Answer #1

s = Q/T ... by definition of entropy

Q = mc dT = 0.039 x 2220 x (65-(-69))

= 11601.7 J

T= 65+273 = 338K

s = 34.32 J/K

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Answer 2

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