Molecular formula :
nature : as a result of temperature differences in the system and the environment by heat conduction, convection and other forms of electromagnetic radiation exchange of energy. Therefore, a system that the amount of heat is meaningless. Heat is the dimensionless ML2T-2, signs Q, unit is Coke (ears) J. Heat (thermal energy) and the heat is different from that of bulk refers to the systematic campaign of random molecular average energy. In thermodynamics, the system absorbs heat from the environment to Q said, the system heat to the environment, Q negative. System in the process of drawing both the heat and the process of the state has also experienced the process and pathway.
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