Burning wood produces the same amount of heat as burning natural gas.
| July 29, 2021 | education
Burning wood produces the same amount of heat as burning natural gas. How many times is the mass of firewood greater than the mass of natural gas?
To calculate the ratio of the masses of burnt natural gas and firewood, we apply the proportion: md * qd = mg * qg, whence md / mg = qg / qd.
The value of the constants: qg – specific heat of combustion of natural gas (qg = 4.4 * 10 ^ 7 J / kg); qд – specific heat of combustion of firewood (qd = 1 * 10 ^ 7 J / kg).
Let’s perform the calculation: md / mg = qg / qd = 4.4 * 10 ^ 7 / (1 * 10 ^ 7) = 4.4 times.
Answer: The mass of burned firewood is 4.4 times more.
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