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1) The decomposition of hydrogen peroxide, H2O2, is first order with a rate constant, k = 3.66 ×10-3 s-1. If the initial concentration of H2O2 is 1.05 M, calculate [H2O2] after 187 s. A) 0.234 B) 0.203 C) 0.978 D) 0.863 E) 0.530