Heat Capacity

Monday, 7 May 2018

4:48 PM

Symbol:

The amount of energy needed to raise a sample by

 

 

Specific Heat is the heat capacity per unit mass c=C/m

 

 

 

(Heat capacity)

 

Specific heat can be regarded as the insensitivity of a substance to the change of energy.

[ Resistance to change!]

 

TABLE 20.1 Substance Elemental solids Aluminum Beryllium Cadmium Copper Germanium Gold Iron Lead Silicon Silver Specific Heals of Some Substances at 250C and Atmospheric Pmssure Specific Heat (J/kg • cc) 900 1 830 230 387 322 129 448 128 703 234 Substance Other solids Brass Glass Ice (-50C) Marble Wood Liquids Alcohol (ethyl) Mercury Water (150C) Steam (1000C) Specific Heat (J/kg • •C) 380 837 2 090 860 1 700 2 400 140 4 186 2 010 Note: To convert values to units of cal/g • oc, divide by 4 186. In your textbook this is table 19.2 on page 556

 

 

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