Question

zu. Twelve ounces (355 mL) of Gatorade contains 45 mg of potassium. What is the concentration of potassium in molarity? a. 0.13 M b. 0.0032 M C. 3.2 M d. 1.6 x 104 M M Mc boas on salute - Louca ina 55 or Solut ora 355

Answer 1

mass of potassium = 45mg = 0.045g

volume of solution = 355ml

atomic mass of potassium = 39.0983g/mole

molarity = W*1000/G.A.M*volume of solution in ml

            = 0.045*1000/(39.0983*355)

             = 0.0032M

b.0.0032M >>>answer