Question: 3. The rate constant for the first - order decomposition of a particular chemical Z is 0.40/s. In a particular experiment the initial concentration of

3. The rate constant for the first - order decomposition of a particular chemical Z is 0.40/s. In a particular experiment the initial concentration of Z was 2.50M. Calculate the following: a) the [Z] after 10 seconds. b) time required for [Z] to drop to 0.20M. c) the half-life of the reaction. d) the fraction of the sample that will remain after 30s

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