Calculate the amount of heat required to heat 2.3 kg water poured into a 1.6 kg copper pan from 20 ° C to 100 ° C.
| July 28, 2021 | education
mw = 2.3 kg.
mk = 1.6 kg.
Cw = 4200 J / kg * ° С.
Cm = 390 J / kg * ° С.
t1 = 20 ° C.
t2 = 100 ° C.
Q -?
The amount of heat energy is determined by the formula: Q = Cw * mw * (t2 – t1) + Cm * mk * (t2 – t1).
Q = 4200 J / kg * ° C * 2.5 kg * (100 ° C – 20 ° C) + 390 J / kg * ° C * 1.6 kg * (100 ° C – 20 ° C) = 889920 J …
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