Question

how many atoms are present in 9g of aluminium?? STEPBYSTEP​

Answer 1

Answer:

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

Molecular mass of Aluminium= 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 = 0.333× Avogadro no.

=0.333×6.022×10^23=2.005×10^23 atoms.

Explanation:

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