1. Graph the phosphate standard curve created in this lab by plotting the absorbance as the ordinate (y) versus concentration of phosphate as the abscissa (x). Next, using the equation of the line, calculate the concentration of the unknown. Account for any dilutions you may have made. Be sure to label your axis and provide a descriptive title for your chart. (5 marks) 2. You have 18 M H2SO4 you need to make 100 ml of 0.45 M H2SO4. How is this best done? Include all calculations. (1 mark) 3. Using calculations determine how you would make 525 mL of a 0.50 M solution of Clions using CaCl (1 mark)