A sample of 0.6160 g of an unknown compound containing barium ions (Ba 2+ ) is dissolved in water and treated with an excess of Na 2 CO 3 . If the…

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A sample of 0.6160 g of an unknown compound containing barium ions (Ba2+) is dissolved in water and treated with an excess of Na2CO3. If the mass of the BaCO3 precipitate formed is 0.5599 g, what is the percent by mass of Ba in the original unknown compound?

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