The phenomenon which best explains the role of catalyst in a
reaction is that the catalyst lowers the Energy of Activation
:)
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Heating is a chemical phenomenon.
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The reaction to a stimulus is a positive or negative response
depending on the stimulus. It is a cause-and-effect phenomenon with
the stimulus causing the effect.
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Prozonephenomenonis a possible cause of False-Negative antigen-antibody reaction caused by Excessive amout of antibody
Post-zonephenomenonrefers to the Excess of antigen resulting in no lattice formation in an agglutination reaction