Problem 17:  Two amounts of salt water at different temperatures are brought into thermal contact with each other and mixed thoroughly. The first amount of water has mass m1 = 0.302 kg and its initial temperature is T1 = 7.31 °C. The second has a mass of m2 = 0.823 kg and an initial temperature of T2 = 30.5 °C. Assume that the system is isolated. Let the specific heat of the water at this salinity to be CW = 0.83 kcal / kg / K. Part (a)  After both amounts of water are mixed and reach thermal equilibrium, what is the total change in the amount of internal energy, in joules, of the system? Part (b)  Find an expression for the final temperature of the water after thermal equilibrium has been reached. Part (c)  Find the change in entropy of the first amount of water alone as it moves from its initial temperature T1 to its final temperature Tf in kcal/K. Part (d)  Find the total change in entropy of the system, in kcal / K

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Q: An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of…

A: mass of water = 225 g mass of copper stirrer = 40 g mass of silver = 440 g Let the mass of aluminum…

Q: Two amounts of salt water at different temperatures are brought into thermal contact with each other…

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Q: A 2.9 kg lump of aluminum is heated to 93°C and then dropped into 8.0 kg of water at 5.0°C. Assuming…

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Q: A 0.300 kg aluminum container in a calorimeter is at 10.0 Celsius. 0.200 kg of water at 70.0 Celsius…

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Q: m 9:   Two amounts of salt water at different temperatures are brought into thermal contact with…

A: Solution 9 : a). The given quantities are as follows: m1=0.302 kg,T1=8.61°C,m2=0.873…

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Q: O kg of water at 5.C nd aluminum are 41

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Q: Two amounts of salt water at different temperatures are brought into thermal contact with each other…

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Q: Problem 9:   Two amounts of salt water at different temperatures are brought into thermal contact…

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Q: Two amounts of salt water at different temperatures are brought into thermal contact with each other…

A: Equate heat lost by the second mass to the heat gained by the first mass to find the equilibrium…

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Q: Two amounts of salt water at different temperatures are brought into thermal contact with each other…

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Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.