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Calculate the number of moles present in...

Calculate the number of moles present in the following `:`
90g of magnesium oxide

Text Solution

Verified by Experts

Number of mol `=("Weight of the substance in g ")/( "gram molecular weight (or) gram atomic weight")`
Weight of MgO - 90g
`" gram molecular weight of MgO "} = 24+ 16 = 40`
`:.` number of mol `= (90)/( 40) = 2.25 ` mol
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