A 20 kg block of iron and a 50 kg block of lead are sealed together...

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Mechanical Engineering

A 20 kg block of iron and a 50 kg block of lead are sealedtogether in a tank with 5 kg of air. Initially the iron, lead, andair are at 200°C, 150°C, and 20°C, respectively. The air isinitially at 100 kPa. After some time, the final system reachesthermal equilibrium and the air pressure inside the tank is 141kPa. How much heat transfer occurred between the tank and thesurrounding 20°C air? How much total entropy has been generated?There is air inside and outside of the tank.

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