1 Answer

Giorgos Kylafas · Answer 1 · 2023-01-28T06:29:29+0000

The given mass of water is,

$m=1\text{ kg}$

The value of the raise in the temperature is,

$\Delta T=5^cC$

The value of the specific heat of the water is,

$c=4200\text{ }Jkg^(-1)C^(-1)$

Thus, the energy needed to increase the temperature of water is,

$\begin{gathered} Q=mc\Delta T \\ Q=1*4200*5 \\ Q=21000\text{ J} \\ Q=21*10^3\text{ J} \\ Q=21\text{ kJ} \end{gathered}$

Hence, the amount of energy required to raise the temperature of the water to 5 degree C is 21 kJ.

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