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In an insulating box, there is a 140.0g block of lead whose temperature is 100K and...

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Physics

In an insulating box, there is a 140.0g block of lead whosetemperature is 100K and a 70.0g block of tungsten whose temperatureis 300K. (a) What is the equilibrium temperature of the two-blocksystem? (b) What is the change in the internal energy of the systembetween the initial and the equilibrium state? (c) What is thechange in the entropy of the system? (specific heat of tungsten:0.0321cal/g · K, molar specific heat of tungsten: 24.8J/mol · K,specific heat of lead: 0.0305cal/g ·K, molar specific heat of lead:26.5J/mol·K

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