a) Given that the molar mass of H3PO4 is 97.994 grams, find out the number of grams of H3PO4 needed to prepare 1.20 L of a 0.8 M H3PO4 solution.
b) Explain what volume in liters of a 0.8 M H3PO4 solution can be prepared by diluting 50 ml of a 3.5 M H3PO4 solution?