Originally Posted by

**oli212** Ok, here is my question

In a laboratory experiment a quantity of a radioactive isotope was placed in a closed container. Measurements were taken to determine how much of the isotope remained after various intervals of time. The experimenter omitted to provide information on the initial mass M0 (0 is small at bottom of M) of the isotope, but postulated that M and M0 were related by the decay equation:

M = M0e-kt (-kt is small and at the top, as if its to the power of -kt).

where k is the decay constant and t is time. Show how to transform the equation by taking natural logarithms so that a straight line graph of the form y = mx + c may be plotted, and state how y , m and c are related to M , M0 , k and t .

Not too sure how to go about this. Can someone please give me some guidence?