Question

How many moles of water (H2O) does 10.82 x 1023 molecules represent? Round your answer to the hundredths place.

Answer 1

• No of molecules given=10.82×10²³

So

`\boxed{\sf No\:of\: molecules=No\:of\:moles* Avagadro\:no}`

`\\ \tt{:}\longrightarrow 10.82* 10^(23)=n* 6.023* 10^(23)`

`\\ \tt{:}\longrightarrow n=(10.82)/(6.023)`

`\\ \tt{:}\longrightarrow n=1.8mol`

Answer 2

No of moles

`\\ \rm\Rrightarrow (No\:of\: molecules)/(Avagadro\:no)`

`\\ \rm\Rrightarrow (10.82* 10^(23))/(6.023* 10^(23))`

`\\ \rm\Rrightarrow 1.80mol`