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The energy required is 83,600 j/kg°C, for the given specific heat of the ice.
What is Specific heat?
The amount of heat needed to raise a substance's temperature by one degree Celsius in one gram is also known as specific heat. Typically, calories or joules per gram per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gram per degree Celsius.
What is Energy?
The quantitative quality that is transferred to a physical system or a body is known as energy, and it is evident in the production of heat and light as well as in the performance of work. The law of conservation of energy asserts that although energy can change its form, it cannot be created or destroyed. Energy is a conserved quantity.
What are the calculations?
The total heat required will be the sum of heat energy needed to change the temperature of ice from –40°C to 0°C.
q (total) = mc (ΔT)
= 1 × 2090 × (0 + 40)
= 2090 × 40
= 83,600 j/kg°C
Hence, the energy required is 83,600 j/kg°C, for the given specific heat of the ice.
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