Geography, 27.09.2019 17:10 justalikri
3.2 tons of coal is used to provide enough heat to bring the temperature of 2.0 x l05 gallons of water up 300 f. the heat value of one ton of coal is 2.5 x107 btu/ton. one gallon of water weighs 8 lbs and btu’s are calculated by multiplying pounds of water by their change in temperature in degrees fahrenheit. what is the efficiency?
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