Vitride is sold as a 70% by mass solution in toluene. The average mass of a drop of toluene is about 15 mg. Assuming that the density of toluene and the Vitride solution are the same how many moles of Vitride are in one drop of the Vitride solution?

Vitride is sold as a 70% by mass solution in toluene. The average mass of a drop of toluene is about 15 mg. Assuming that the density of toluene and the Vitride solution are the same how many moles of Vitride are in one drop of the Vitride solution?