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Answer :

No of moles

[tex]\\ \rm\Rrightarrow \dfrac{No\:of\: molecules}{Avagadro\:no}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{10.82\times 10^{23}}{6.023\times 10^{23}}[/tex]

[tex]\\ \rm\Rrightarrow 1.80mol[/tex]

MercilessSparkgo
  • No of molecules given=10.82×10²³

So

[tex]\boxed{\sf No\:of\: molecules=No\:of\:moles\times Avagadro\:no}[/tex]

[tex]\\ \tt{:}\longrightarrow 10.82\times 10^{23}=n\times 6.023\times 10^{23}[/tex]

[tex]\\ \tt{:}\longrightarrow n=\dfrac{10.82}{6.023}[/tex]

[tex]\\ \tt{:}\longrightarrow n=1.8mol[/tex]

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