You are shoveling bituminous Pennsylvania coal (with an energy content of 13,870 Btu/lb) from a coal...

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Chemistry

You are shoveling bituminous Pennsylvania coal (with an energycontent of 13,870 Btu/lb) from a coal box into a furnace. Onaverage, with each lift and throw, you raise a 1.8 kg shovelcontaining 4.7 kg of coal by a height of 0.85 m. Assume your bodyis working with an efficiency of 15.9%. How many thousands of timesmore chemical energy is in the coal you move than is in the sugarsand fats your body is burning to move it?

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4.5 Ratings (706 Votes)

The energy content of the coal is13870 Btulb Now let us convert this in Jkg first 1 Btu 105506 J So 13870 Btu 13870 Btu 105506 J1 Btu 146 x 107 J 1 lb 04536 kg So the energy content will be See Answer

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