How much heat is needed to change 1.25 kg of steak at 100°C to water at 100°C?

The heat required to change 1.25 kg of steak is 2825 kJ /kg.

Explanation:

Given, mass m = 1.25 kg,     Temperature t = 100 degree celsius

To calculate the heat required,

                                 Q = m L

where m represents the mass in kg,

          L represents the heat of vaporization.

When a material in the liquid state is given energy, it changes its phase from liquid to vapor and the energy absorbed in this process is called heat of the vaporization. The heat of vaporization of the water is about 2260 kJ/kg.

                                  Q = 1.25 2260

                                  Q = 2825 kJ /kg.

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