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(a) How much energy is necessary to heat 4.0 kg of water from room temperature (20°C)...

(a) How much energy is necessary to heat 4.0 kg of water from room temperature (20°C) to its boiling point? (Assume no energy loss.) (b) If electrical energy were used, how much would this cost at 23¢ per kWh?

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Mer cost ニ (O. 372 23 수 18.55***************************************************************************************************
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