Each other answer has the words 'more difficult' or 'not commonly used. I think this is right...I won't see my grade for a long time though.... very, truly sorry if it is wrong! :)
Molar solubility<span> is the number of moles of a substance (the solute) that can be dissolved per liter of solution before the solution becomes saturated. We calculate as follows:
</span>3Cu2+ + 2(AsO4)3-<span> = Cu3(AsO4)2 </span> 7.6 x 10^-36 = (3x^3)(2x^2) x = 6.62 x 10^-8 M
