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Find the number of (1) atoms and (2) mol...

Find the number of (1) atoms and (2) molecules present in 1 g of oxygen.

Text Solution

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1g oxygen `=(1)/(32)` gram-mole of oxygen `[because M_(O_(2))=32]`
`therefore`Number of molecules in 1 g of oxygen`=6.022xx10^(23)xx(1)/(32)`
`=1.882xx10^(22)`
As oxygen molecule is diatomic, number of atoms present
in 1 g of oxygen `=2xx1.882xx10^(22)=3.764xx10^(22)`
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