Question
Asked Oct 10, 2019
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A 5.00 gram sample of an oxide of lead PbxOy contains 4.33 g of lead. Determine the simplest formula for the compound.

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Expert Answer

Step 1

The empirical formula is the chemical formula of any compound that represents the proportions of each elements that is present in the given compound. It does not show the actual number of element as well as cannot give any information about arrangement of atoms in the formula of compound.

Step 2

 Mass of sample = 5.00 g

Mass of Pb = 4.33 g

Hence mass of O = 5.00 – 4.33 = 0.67 g

Step 3

Calculate the moles of Pb and O:

Molar mass of Pb = 20...

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Moles of Pb 4.33 g Po= 0.02moles 207 g /mol 0.67 g O 0.04 moles Moles of O 16.0 g /mol

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