Question

The label on a bottle of "organic" liquid fertilizer concentrate states that it contains 7.40 grams of phosphate per 100.0 mL and that 16.0 fluid ounces should be diluted with water to make 32.0 gallons of fertilizer to be applied to growing plants. What version of the dilution equation can be used to calculate the final phosphate concentration? Express your answer in terms of Vi, Ci, and Vf.