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28 March, 08:16

A 5.00 gram sample of an oxide of lead PbxOy contains 4.33g of lead. Determine the simplest formula for the compound.

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  1. 28 March, 08:25
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    PbO2

    You have to take the mass of lead in the problem, and divide by the molar mass.

    When you do the same with oxygen, you get a number about twice as large as when you divide the mass of lead by the molar mass of lead. This means that the simplest formula would be PbO2
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