Achemist adds 220.0ml of a 0.194 m potassium permanganate kmno4 solution to a reaction flask. calculate the mass in grams of potassium permanganate the chemist has added to the flask

The formula of determining the molarity is:

molarity =   -(1)

Volume of solution =  (given)

Since, 1 mL = 0.001 L

Therefore, volume of the solution = 0.22 L

Molarity = 0.194 M  (given)

Substituting the values in formula (1)

Now, number of moles =  -(2)

Molar mass of =

Substituting the value of number of moles and molar mass of in equation   -(2)

Hence, the mass in grams of potassium permanganate the chemist has added to the flask is .

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.