How much bituminous coal needs to be burned to heat 100kg of steel from 100 to 200 degrees Celsius?
| November 23, 2020 | education
How much coal needs to be burned to heat 100kg of steel from 100 to 200 degrees Celsius
The amount of heat required to heat steel = cm (t2-t1) = 500 * 100 * (200-100) = 5 * 10⁶ J
the amount of heat released during the combustion of coal = qm, hence
m = Q / q = 5 * 10⁶ / 3 * 10⁷ = 5/30 = 0.17 kg you need to burn coal to heat 100 kg of steel from 100 to 200 degrees Celsius
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