How much heat was released during the cooling of water, the volume of which is 20 liters if the temperature

univerkov | December 3, 2020 | education

How much heat was released during the cooling of water, the volume of which is 20 liters if the temperature changed from 15 to 5 degrees Celsius.

Given:
m = 20L = 20 kg
t1 = 15 ° C
t2 = 5 ° C
c = 4200
Find: Q
Decision:
Let’s write out the formula
Q = cm∆t
Substitute the values
Q = 4200 * 20 * (15-5) = 840000 J

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