1) Find the percent composition of copper (II) phosphate: Cu3(PO4)2
2) Find the percent composition of sodium sulfate: Na2SO4
3) Find the simplest (empirical) formula of a compound found to consist of 26.56% K, 35.41% Cr, and
4) Find the molecular formula of a compound having a simplest formula of CH2O and a formula mass of 180.16u.
5) Determine the molecular formula of a compound consisting of 40.00% C, 6.71% H, and 53.29%O, with a formula mass of 180.1854 u.