please can someone help

please can someone help

Select True or False for the following statements about chemical kinetics. The reaction activation energy is always positive.  A clock reaction is a reaction that occurs at a constant rate. The activation energy can be decreased by addition of a catalyst.  The rate of a reaction usually changes if the concentration of the reactants are changed.  The energy of activation is always greater for the reverse reaction.
What effect does a catalyst have on each of the following? increases, decrease or does not changeThe rate of the reverse step of the reaction. The rate of the foward step of the reaction. Enthalpy of Reaction The post please can someone help first appeared on Nursing School Essays.

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