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When 1.0 kg of anthracite coal is burned about 7300 kcal is evolved. What a

When 1.0 kg of anthracite coal is burned about 7300 kcal is evolved. What amount of coal is required to heat 4.0 kg of water from room temperature (20°C) to the boiling point (at 1 atm pressure), assuming that all the heat is available?

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