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Question

Calculate the number of moles in 9 grams of aluminium.


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Solution

Numberofmoles(n)=MassofelementingramsGramatomicmassofelementn=MassofaluminiumingramsGramatomicmassofaluminiumn=9g27g/moln=13n=0.33moleofAl.Therefore,numberofmolesin9gramsofaluminiumare0.33.


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