Water weighing 1 kg is poured into a steel pan weighing 400 g at an initial temperature of 20 ° C
| September 30, 2021 | education
Water weighing 1 kg is poured into a steel pan weighing 400 g at an initial temperature of 20 ° C at a temperature of 10 ° C. How much heat must be transferred to a pot of water to heat the water in it to 100 ° C?
Solution:
Q = Qb + Qk = 0.4 * 500 * 80 + 1 * 4200 * 90 = 16,000 + 378,000 = 394,000 J = 394 kJ.
Answer: 394 kJ.
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