How much heat must be transferred to 1 kg of water in order to increase its temperature from 15 * C to 100 * C?
| September 1, 2021 | education
m = 1 kg.
C = 4200 J / kg * 0С.
t1 = 15 0С.
t2 = 100 0С.
Q -?
The amount of heat Q required for heating water is expressed by the formula: Q = C * m * (t2 – t1), where C is the specific heat capacity of water, m is the mass of water that is heated, t2, t1 are the final and initial water temperatures.
Q = 4200 J / kg * 0С * 1 kg * (100 0С – 15 0С) = 357000 J.
Answer: to heat water, you need to spend Q = 357000 J of thermal energy.
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