chemistry

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If i have .0030M BaSO4 how do I calculate the moles of sulfate?

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    You have 1 Ba ion in 1 molecule of BaSO4. You have 1 S atom per molecule BaSO4, you have 4 atoms O in 1 molecule BaSO4 and you have 1 sulfate ion in 1 molecule of BaSO4.
    So 0.003M BaSO4 and you will have 0.0030 M Ba ion, 0.0030 M S, 0.0030 M SO4 and 4*0.0030 M O.

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