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Calculate the total no. of electrons in 1.4 g of dinitrogen gas.?
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Calculate the total no. of electrons in 1.4 g of dinitrogen gas.?
Molecular mass of N2 = 28 g/mol
So, No of moles= 1.4/28 = 0.05 mole
 1 mole of any molecule has 6.022 x 10^22 molecules,
 
0.05 moles of N2 = 0.05 x 6.022 x 10^22 molecules.
1 molecule of nitrogen has 14 electrons in it.
 
So, 0.05 x 6.022 x 10^22 molecules = 0.05 x 6.022 x 10^22  x 14 electrons
 
= 4.214 x 10^23 electrons

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