Problem- Which of the following represents a 100 ppm solution of quinine sulfate?
100 mg of quinine sulfate in 1 liter of water
100 g of quinine sulfate in 1 liter of water
100 g of quinine sulfate in 100 mL of water
100 mg of quinine sulfate in 100 mL of water
Not confident which formulas/units I require to solve something like this