As a technician in a large pharmaceutical research firm, you need to produce 300. of 1.00 potassium phosphate buffer solution of = 7.11. The of is 7.21. You have the following supplies: 2.00 of 1.00 stock solution, 1.50 of 1.00 stock solution, and a carboy of pure distilled . How much 1.00 will you need to make this solution?