A total of 6.28 x 10^5 J is taken from a heat source at 150.0 degrees Celsius and rejected to a heat sink at 50.0 degrees Celsius. Find (a) the change of entropy of in the heat source and heat sink separately and (b) the entropy change in the total system.
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Ответ:
Explanation:
a)
change in entropy of source = heat taken / temperature of source
= 6.28 x 10⁵ / (273 + 150)
= 628000 / 423
= 1484.63 JK⁻¹ ( decrease in entropy )
heat rejected in sink = 628000 x (273 + 50) / 423
= 628000 x 323 / 423
= 479536.64 J
change in entropy of sink = heat rejected / temperature of sink
= 479536.64 / (273 + 50)
=479536.64 / 323
= 1484.63 JK⁻¹ ( increase in entropy )
b )
net entropy change in the system
= +1484.63 - 1484.63
= zero.
Ответ:
D. liquid with high the state Viscosity
Explanation:
It still a liquid because its able to take shape of an object, But due to its thickness it hard to tell. So Its counted as a Liquid with high Viscosity ( the state of being thick, sticky, and semifluid in consistency, due to internal friction.)