Question

Assuming the heat capacity of 10 g water to be 42 J/K, the heat required to raise its temperature from 25 °C to 35 °C would be​

Answer 1

Explanation:

Mass of water = 10g = 1/100 kg. If I may correct you, the heat capacity of water us 4200J/kg°C and not 42J/kg.

Now, there is a formula Q=msdt where Q is the amount of heat required m is the mass , s is the specific heat capacity and dt is the change in temperature.

Therefore Q= 1=1/100 kg × 4200J/kg°C × 10°C

because the temperature has to be changed from 25to 35 and 35-25=10.

Now all the units except Joule get cancelled and we get 420J.

thus the amount of heat required required to raise the temperature of 10 g of water from 25 to 35 degree = 420J.

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