7—THERMOCHEMISTRY .HEATOF REACTION - James Madison University

formation exceeds that required to break the old bonds, and for each mole of reaction 145.3 kJ are released. If a reaction gives off heat (or takes in heat), the heat has to go (or come from) somewhere—remember the law of conservation of energy. Adding heat to a system will increase the kinetic energy of the system. As a result of the ................
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