In which kin contain more atoms: 100 grams of sodium or 100 grams of iron {fay} {n} atom mass = 23u, atomic mass = 56 u}
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No.of moles in 100g Na
= given mass/ molecular mass
=100/23
= 4.3
No of atoms of Na
=no.of moles * Avagadro number
= 4.3 *NA
(NA = 6.02 * 10^23)
No.of moles of Fe
= 100/56
=1.78
No.of atoms of Fe = 1.78* NA
Hence sodium has more atoms.
tarunjoshi8383:
its ok
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