The rate at which a metal alloy oxidizes in an oxygen containing atmoshphere is a type of the Arrhenius equation (rate(k)=Ce^(-Q/RT)). For example, the rate og oxidation of a magnesium alloy is represented by a rate constant k.

Given: the value of k at 300 degrees C is 1.05x10^-8 kg/(m^4xs). At 400 C, the value of the k rises to 2.95x10^-4 Kg/(m^4xs).

Calculate

A) the activation energy Q for this activation process

B) Preexponential constant C, and

C) value of th rate constant k at 500 degrees C