How much will the temperature of water change, whose mass is 10 kg, if you transfer to it the energy
May 21, 2021 | education
| How much will the temperature of water change, whose mass is 10 kg, if you transfer to it the energy released during the combustion of kerosene weighing 50 g
Data: mw (mass of heated water) = 10 kg; mk (mass of completely burnt kerosene) = 50 g (0.05 kg).
Reference values: Sv (specific heat capacity of water) = 4200 J / (kg * ºС); qк (specific heat of combustion of kerosene) = 46 * 10 ^ 6 J / kg.
The temperature rise of the taken water can be determined from the equality: Sv * mw * Δt = mk * qk, whence Δt = mk * qk / (Sv * mw).
Let’s perform the calculation: Δt = 0.05 * 46 * 10 ^ 6 / (4200 * 10) = 54.76 ºС.
Answer: The temperature of the taken water will increase by 54.76 ºС.
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