Recent content by ununseptium

  1. U

    How to find the mass of a compound given the half life and activity?

    Homework Statement What mass of Na2 SO4 has an activity of 10.0 mCi? Sulfur-38 has an atomic mass of 38.0 and a half life of 2.87h Homework Equations Half life= 0.693/ k Rate= kN The Attempt at a Solution I'm not sure where to begin the sulfur-38 part is throwing me off All I...