Question

Define the terms specific heat
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Answer 1

$\huge\mathfrak{\underline{\underline{\red{specific \: heat}}}}$

The specific heat capacity,(symbol Cp) of a substance is the heat capacity of a sample of the substance divided by the mass of the sample. Informally, it is the amount of energy that must be added, in the form of heat, to one unit of mass of the substance in order to cause an increase of one unit in its temperature. The SI unit of specific heat is joule per kelvin and kilogram, J/(K kg).

For example, at a temperature of 25 °C (the specific heat capacity can vary with the temperature), the heat required to raise the temperature of 1 kg of water by 1 K (equivalent to 1 °C) is 4179.6 joules, meaning that the specific heat of water is 4179.6 J·kg^−1·K^−1.

The specific heat often varies with temperature, and is different for each state of matter. Liquid water has one of the highest specific heats among common substances, about 4182 J/(K kg) at 20 °C; but that of ice just below 0 °C is only 2093 J/(K kg). The specific heats of iron, granite, and hydrogen gas are about 449, 790, and 14300 J/(K kg), respectively.[4] While the substance is undergoing a phase transition, such as melting or boiling, its specific heat is technically infinite, because the heat goes into changing its state rather than raising its temperature.

The specific heat of a substance, especially a gas, may be significantly higher when it is allowed to expand as it is heated (specific heat at constant pressure) than when is heated in a closed vessel that prevents expansion (specific heat at constant volume). These two values are usually denoted by

${\displaystyle c_{P}}c_{P} and {\displaystyle c_{V}}c_{V}, {\displaystyle \gamma =c_{P}/c_{V}}{\displaystyle \gamma =c_{P}/c_{V}}$

is the heat capacity ratio.

Answer 2

Answer:

The specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass.

Explanation:

example-A 250g copper pipe is heated from 10℃ to31℃.

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