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nature : in the process, such as temperature, the heat absorption system. Because the process is different. Reaction heat (such as heat generation and heat of combustion, thermal decomposition with and thermal), phase change thermal (heat evaporation, sublimation heat, melt heat), dissolved thermal (heat dissolved integral, differential thermal dissolved), the dilution fever. Isovolumic process of the thermal effects, saying such heat effect [isochoric heat (ing) effect]; Pressure process called thermal effects such as pressure [isobaric heat (ing) effect]. Chemical reactions, phase change process in general is so under conditions of pressure, and it listed in the Handbook of the data is generally Pressure thermal effect. Because these processes normally not accompanied by other power (only size gong), thermal effects, such as pressure on the same system enthalpy increment. Used symbols # H said. If negative, show exothermic process. The wider use of such data and scientific research, industrial design and production.
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