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2NO+O2=2NO2 CALCULATE THE CHANGE OF HELMHOLTS FREE EMERGY OF THE REACTION UNDER STANDARD CONDITION IS THE REACTION SPONTANEOUS IF THE VOLUME OF THE SYSTEM IS CONSTANT.

HCL+NH3=NH4CL CALCULATE THE HEAT EFFECT OF THE CHEMICAL REACTION OF DELTA H  CALCULATE THE VALUUE OF DELTA UNIVERSE .

 

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