1.

Which one of the following will have largest number of atoms ? (i) 1 g Au_((s)) (ii) 1g Na_((s)) (iii) 1 g Li_((s)) (iv) 1 g Cl_(2(g))

Answer»



Solution :(i) 1 gm `Au = (1)/(197) ` MOL Au MOLECULE
`=(1)/(197)xx6.022xx10^(23)` Au atom
(ii) 1 gm `Na=(1)/(23)` mol Na molecule
`=(1)/(23) xx 6.022 xx 10^(23)` Na atom
(iii) 1 gm `Li=(1)/(7)` mol Li molecule
`= 1/7 xx 6.022 xx 10^(23)` Li atom
(IV) 1 gm `Cl_(2) = (1)/(71) mol Cl_(2)` molecule
`=(1)/(71) xx 6.022 xx 10^(23)`
`=(2)/(71) xx 6.022 xx 10^(23) Cl_(2)` atom


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