The amount of heat required to raise the temperature of an object by 1 K. Depending on whether the unit of heat is the joule or calorie, the unit of heat capacity is J/K or cal/K. Heat capacity is proportional to mass, and the heat capacity per unit mass is called specific heat, while the heat capacity per atomic weight or molecular weight is called atomic heat (specific heat × atomic weight) or molecular heat (specific heat × molecular weight). Molecular heat is also called molar heat, molar specific heat, or molar heat capacity. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
物体の温度を単位温度 1K上げるのに必要な熱量。熱量の単位にジュールまたはカロリーを用いるのに応じて,熱容量の単位は J/K または cal/K が用いられる。熱容量は質量に比例し,単位質量の熱容量を比熱,また原子量,分子量あたりの熱容量を原子熱 (比熱×原子量) ,分子熱 (比熱×分子量) という。分子熱はモル熱,モル比熱またはモル熱容量とも呼ばれる。
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