Two identical metal blocks L and M(specific heat = 0.4 kJ/kg K), each having a mass of 5 kg, are initially at 313 K. A reversible refrigerator extracts heat from block L and rejects heat to block M until the temperature of block L reaches 293 K. The final temperature (in K) of block M is ______ .

Two identical metal blocks L and M(specific heat = 0.4 kJ/kg K), each

1.	Two identical metal blocks L and M(specific heat = 0.4 kJ/kg K), each having a mass of 5 kg, are initially at 313 K. A reversible refrigerator extracts heat from block L and rejects heat to block M until the temperature of block L reaches 293 K. The final temperature (in K) of block M is ______ .
A.	451
B.	333
C.	323
D.	222
E.	None of these
Answer» C. 323

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Two identical metal blocks L and M(specific heat = 0.4 kJ/kg K), each having a mass of 5 kg, are initially at 313 K. A reversible refrigerator extracts heat from block L and rejects heat to block M until the temperature of block L reaches 293 K. The final temperature (in K) of block M is ______ .

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