One of the early experiments in the development of the atomic bomb was to demonstrate that 235U and 238U is the fissionable isotope. a mass spectrometer was employed to separate 235 UF6 from 238UF6. calculate the value ?S for the separation of 100mg of the mixture of gas, given that the natural abundances of 235U and 238U are 0.72% and 99.28% respectively, and that of 19F is 100%