The water was heated by 5 degrees Celsius, giving it an amount of heat equal to 4.2 kJ. The mass of water is

univerkov | November 23, 2020 | education

We find by the formula for the specific heat capacity:
Q = cm (t2-t1)
m = Q / c (t2-t1) = 4.2 kJ / 4200 * 5 = 4200/4200 * 5 = 1/5 = 0.2 kg = 200 g
Answer: 200 g

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