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What is specific heat capacity?please mention some important substances specific heat capacity.

The amount of heat required to raise the temperatue of 1g of a substance at 1oC is known as the specific heat capacity of that substance. The CGS unit is J g-1 oC-1. The SI unit is J kg-1 K-1. Two substances are:

water= 4.2 J g-1 oC-1.

copper= 0.4 J g-1 oC-1.

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 the above ans is correct and water has the highest specific heat capacity as it takes time to get warm and even to get cool down

:)

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Good Question!!!!!!

Heat capacity (usually denoted by a capital C, often with subscripts), or thermal capacity, is the measurable physical quantity that characterizes the amount of heatrequired to change a substance's temperature by a given amount. In the International System of Units (SI), heat capacity is expressed in units of joule(s) (J) per kelvin (K).

The specific heat of a substance allows us to calculate the amount of heat energy required to change its temperature. Water has a specific heat nearly 11 times great than copper, therefore, water will take 11 times more energy to heat. Also water heats slowly and copper heats and cools rapidly.

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The specific heat capacity of a given substance is defined as the amount of heat required to raise the temperature of 1kg of that substance through 1K or 1 degree celcious. The specific heat capacity is j/kg-k. Specific heat capacity of a substance is constant but its value varies from place to place.

Specific heat of substance :-

  • Cu  386J/Kg-k
  • Fe  450J/kg-k
  • Pb  128J/kg-k
  • Al  900J/kg-k
  • Ag  230J/kg-k
  • H2O  4186J/kg-k
  • Hg  140J/kg-k
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