Given that the molar mass of H_{3}PO_{4} is 97.994 grams, determine the number of grams of H_{3}PO_{4} needed to prepare 1.20 L of a 0.8 M H_{3}PO_{4} solution. Show your work. (5 points)_{}_{}_{}_{}

(b) What volume, in liters, of a 0.8 M H_{3}PO_{4} solution can be prepared by diluting 50 mL of a 3.5 M H_{3}PO_{4} solution? Show your work. (5 points