Practice Problem 6

The most abundant isotope of uranium is ²³⁸U; 99.276% of the atoms in a sample of uranium are ²³⁸U.  Calculate the activity of the ²³⁸U in 1 L of a 1.00 M solution of the uranyl ion, UO₂²⁺.   Assume that the rate constant for the decay of this isotope is 4.87 x 10^-18 disintegrations per second.

Answer

79.2 mCi.