A 200-g aluminum calorimeter can contains 500 g of water at 20°C. A 100-g piece of ice cooled to -20°C is placed in the calorimeter. (a) Find the final temperature of the system, assuming no heat losses. (Assume that the specific heat of ice is 2.0kJ/kg-K.) (b) A second 200-g piece of ice at -20°C is added. How much ice remains in the system after it reaches equilibrium? (c) Would your answer to part (b) be different if both pieces of ice were added at the same time?

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Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.