Question

how many atoms are present in 9g of aluminium ?

Answer 1

Answer:

of moles of atoms present in 9 grams of aluminium is 0.33 moles

Molecular mass of nium = 26.982

gram

It means 26.982 gram of Al contains 1 mole of Al.

So 9.0 gram of Al will contain=9/26.998= 0.333 moles of Al.

No. Of atoms of Al in 9 gram = 0.333x

Avogadro no.

=0.333x6.022x10^23-2.005x10^23

atoms.

Explanation:

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Answer 2

2.005×$10^{23}$ atoms