One of the phosphorus oxides has Mr 220. The composition contains 56.4% by mass of phosphorus. Determine its molecular formula. (ArP = 31)

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)