1.

A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0.4 mole of ozone gas. Which of the two flask contains greater number of oxygen atoms?

Answer»

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Solution :`"1 MOLECULE of oxygen "(O_(2))="2 atoms of oxygen"`
`"1 molecule of ozone "(O_(3))="3 atoms of oxygen"`
`"In FLASK P : 1 mole of oxygen gas"=6.022xx10^(23)" molecules"`
`+"0.5 mole of oxygen gas "=6.022xx10^(23)xx"0.4 molecules"`
`=6.022xx10^(23)xx0.4xx"3 atoms"=7.23xx10^(22)" atoms"`
`therefore` Q has a greater number of oxygen atoms as compared to the flask P.


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