Question

how many number of atoms are in 64g oxygen

Answer 1

Acc. To me,

Your answer is 24*10²³

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Mole=mass/molar mass

n=64/16=4

no. of atoms=mole * 6.023*10²³

                    =4* 6.023*10²³

                    =24*10²³atoms in 64g of O

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I hope you understand my answer