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Barium Sulfate Formula

2 formula and structure the chemical formula of barium sulfate is baso 4 and its molar mass is 233 gmolt is a salt composed of the barium cation ba 2 and the sulfate anion so 4 2, in which sulfur is attached to four oxygen atomse barium metal is in the 2 oxidation statehe chemical structure of barium sulfate is shown below.