A solution contains Cr 3 ion and Mg 2 ion. The addition of 1.00 L of 1.51 sodium fluoride causes the complete precipitation of these ions as chromium (III) fluoride (s) and magnesium fluoride(s). The total mass of the precipitate is 49.6 g. Find the mass of Cr 3 in the original solution.Note: write balanced chemical equations set your equation with unknowns = mole of fluoride ionProvide you answer: number space g example 2 g. (watch sig. fig.)