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Chery Chery
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7 years ago
Solar houses use a variety of energy storage devices to retain the thermal energy absorbed during the day so that it can be released during the night. Suppose that you were to use a device of this kind to produce steam at 100°C during the day, and then allow the steam to cool to 0°C and freeze during the night. How many kilograms of water would be needed to store 20.0 kWh of energy in this way? The latent heat of vaporization of water is 22.6 × 105 J/kg, the latent heat of fusion of water is 33.5 × 104 J/kg, and the specific heat of water is 4186 J/kg ∙ K.
A) 12.4 kg
B) 23.9 kg
C) 35.7 kg
D) 42.6 kg
E) 54.2 kg
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College Physics

College Physics


Edition: 1st
Authors:
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slicealemonslicealemon
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7 years ago
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Chery Author
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#2
7 years ago
You're right again!

Appreciate it
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#3
7 years ago
Are you doing the questions found at the end of the chapter? They should help you with the others too
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