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The reaction A + 2B -> 2C follows the rate law rA = -kACA2CB. If the initial concentrations of components A and B are 0.2

The reaction A + 2B -> 2C follows the rate law rA = -kACA2CB. If the initial concentrations of components A and B are 0.2 M and 0.5 M, respectively, it takes 45 min to reduce the limiting reagent to 10% of its initial value. Calculate the value of kA. What is the unit of kA?

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