1.

calculte the total number of electrons present 1.4 g of dinitrogen gas.

Answer»

Solution :Moles of `N_2 = (1.4)/28 = 0.05`
No. of MOLECULES present `= 0.05 xx 6.022 xx 10^(23)`
`:."No. of electrons present " = 0.05 xx 6.022 xx 10^(23) xx 14`
`( :. 1 "MOLECULE of " N_2` CONTAINS 14 electrons)
= `4.2154 xx 10^(23)` electrons


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