Question: A manometer has oil (density 850 kg/m 3 ) is attached to a tank filled with air. If the oil-level difference between the two

A manometer has oil (density 850 kg/m 3 ) is attached to a tank filled with air. If the oil-level difference between the two columns is 45 cm and the atmospheric pressure is 98 kPa, determine the absolute pressure of the air in the tank b) Aluminum at 100C is placed in a large, insulated tank having 10 kg of water at a temperature of 30C. If the mass of the aluminum is 0.5 kg, find the final equilibrium temperature of the aluminum and water, the entropy change of the aluminum and the water, and the total entropy change of the universe because of this process. Before we work the problem, what do you think the answers ought to be? Are entropy changes going to be positive or negative? What about the entropy generated as the process takes place?

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