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At a certain temperature this reaction follows first-order kinetics with a rate constant of 9.03s1 : 2H3PO4(aq)P2O5(aq)+3H2O(aq) Suppose a vessel contains H3PO4 at a concentration

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At a certain temperature this reaction follows first-order kinetics with a rate constant of 9.03s1 : 2H3PO4(aq)P2O5(aq)+3H2O(aq) Suppose a vessel contains H3PO4 at a concentration of 0.500M. Calculate how long it takes for the concentration of H3PO4 to decrease to 0.0750M. You may assume no other reaction is important. Round your answer to 2 significant digits

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