Question
Asked Jan 19, 2020
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Polonium crystallizes with a simple cubic structure. It has a density of 9.3 g/cm3, a radius of 167 pm, and a molar mass of 209 g/mol. Use these data to calculate Avogadro’s number (the number of atoms in one mole).

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Expert Answer

Step 1

Given data:

Chemistry homework question answer, step 1, image 1
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Step 2

Polonium crystallizes with a simple cubic structure in which edge length is double of radius of atom. The edge length (a) is calculated as shown below.

 

Chemistry homework question answer, step 2, image 1
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Step 3

The volume of unit cell is equal to the volume of cube. Therefor...

Chemistry homework question answer, step 3, image 1
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