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is present initially and 1.50mg is present after 2.25 minutes at 55C, what is the value of the rate constant, k ? 5. Hydrogen peroxide,

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is present initially and 1.50mg is present after 2.25 minutes at 55C, what is the value of the rate constant, k ? 5. Hydrogen peroxide, H2O2(aq), decomposes to H2O(t) and O2(g) in a reaction that is first-order in H2O2 and has a rate constant k=2.55103min1 at a given temperature. How long (in minutes) will it take for 20% of a sample of H2O2 to decompose

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