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The rate of a chemical reaction may be defined as Select one: a. the time it takes for the reaction to be completed b. the change in concentration of any one of the reactants only c. the change in concentration of any one of the reactants or products per time d. the change in concentration of any one of the products only

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emersongrace777
It is A. This is because the rate of reaction is defined as the speed at which the reactants are converted into the products.