Barium sulfate is nearly insoluble in water, and is often used as a method for quantifying
the amount of dissolved sulfate ions in solution. The addition of an excess of barium
chloride into a solution of metal sulfate salts will result in the complete precipitation of
barium sulfate, while the other metals remain in solution. A 1 g sample is dissolved and
is known to contain 50% potassium sulfate, and 50% an unknown metal sulfate salt,
(M+2) SO4. The BaSO4 precipitate weighs 1.635 g. What is the atomic mass of the metal,
M? Taking into account some experimental error, what is the identify of metal M?
Given: Potassium sulfate MW=174.25, BaSO4 MW = 233.39