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Heat capacity, defined

Heat capacity defined on a per unit mass basis is also called specific heat". [Pg.34]

Specific heat capacity. Defined as the quantity of heat in joules required to raise the temperature of 1 kg of a substance by 1 °K. For gases, it is necessary to differentiate between specific heat capacity at constant pressure... [Pg.354]

When one has a model or related data to estimate the normal or lattice heat capacity in the transition region, the enthalpy of transition for a continuous transition can be obtained as an integration of the excess heat capacity, defined as... [Pg.78]

Thermochemical measurements are based on the relationships between heat and temperature. The measurement that relates to the two is heat capacity, defined as the amount of heat that is required to raise the temperature of a substance 1°C. (The amount of substance is sometimes expressed in moles or in grams.) The heat capacity of a mole of a substance is known as the molar heat capacity, while the heat capacity for gram values of a substance are known as specific heat capacities. The specific heat of a substance is the amount of heat required to raise 1 gram of the substance 1°C. The formula that is used to calculate specific heat is Equation 17.4 ... [Pg.414]

The computer programs also calculate a meait heat capacity defined a.s ... [Pg.160]

When a substance absorbs a quantity of heat dq, its temperature will rise accordingly by an amount dT. The ratio of the two is the heat capacity, defined as... [Pg.111]

Heat capacity - Defined in general as dQ/dT, where dQ is the amount of heat that must be added to a system to increase its temperature by a small amount dT. The heat capacity at constant pressure is = (dHIdT), that at constant volume is Cy = (dE/dT)y, where H is enthalpy, E is internal energy, p is pressure, Tis volume, and T is temperature. An upper case C normally indicates the molar heat capacity, while a lower case c is used for the specific (per unit mass) heat capacity. [1]... [Pg.106]

Heat capacity - Defined in general as dQ/dT, where dQ is the amount ofheat that must be added to a system to increase its temperature by a small amount dT. The heat capacity at constant pressure is = (377/... [Pg.106]

In the absence of phase transitions, the exchange of heat is accompanied with a temperature change. Such heat is called sensible because it can be sensed with a thermometer. The amount of heat needed to produce a given temperature change varies from one substance to another and is quantified by the heat capacity, defined as the ratio of the amount of heat exchanged to the temperature change observed ... [Pg.102]

The measurement of entropy S° T) requires a measurement of heat capacity from absolute zero up to T, the temperature of interest. Heat capacities are measured in a calorimeter in which the temperature change pursuant to an input of a known quantity of heat (e.g. electrical energy) is monitored. Calculating Cp requires knowing the mass, the temperature increment and energy input, and the heat capacity of the empty apparatus. (In the case of liquids, sometimes what is measured is Cgat, the saturation heat capacity, defined by C at = T(dS/ST i, which differs from Cp by the relationship... [Pg.229]

The units of the heat capacity are J/°C. The heat capacity is normally described based on the amount of the material. For example, chemists would use the specific heat capacity defined as... [Pg.206]


See other pages where Heat capacity, defined is mentioned: [Pg.366]    [Pg.190]    [Pg.280]    [Pg.164]    [Pg.99]    [Pg.93]    [Pg.101]    [Pg.22]    [Pg.80]    [Pg.118]    [Pg.105]    [Pg.104]    [Pg.280]    [Pg.118]    [Pg.93]   
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