molar mass of potassiummolar mass of potassium permanganatemolar mass of potassium bicarbonatepotassium phosphate molar masspotassium hydroxide molar masspotassium chloride molar masspotassium chromate molar masspotassium dichromate molar masspotassium sulfate molar masspotassium bromide molar masspotassium chlorate molar masspotassium nitrate molar mass