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# 1. You wish to heat 20 kg of water from 40C to 80C. How many kcal of heat are necessary? To how many kJ does this correspond?

1. You wish to heat 20 kg of water from 40°C to 80°C. How many kcal of heat are necessary? To how many kJ does this correspond?

Could you walk me through step-by-step & answer this question..