68. Solving a chemistry problem
11. It has been established that the process of decomposition of organic matter is described by a kinetic equation for first-order reactions. Determine the half-life of a given substance, as well as the period of time during which its concentration will be X% of the original. The value of the reaction rate constant (K) is given in Table I.
option number K*104, s-1 X, %
11 4.2 12
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