cALCULATE THE TOTAL NUMBER OF ELECTRONS PRESENT IN 1.4 G OF NITROGEN GAS??

Asked by Baishali Baruah | 13th May, 2013, 08:57: AM

Expert Answer:

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 1022 molecules,
 
0.05 moles of N2 = 0.05 x 6.022 x 1022 molecules.
1 molecule of nitrogen has 14 electrons in it.
 
So, 0.05 x 6.022 x 1022 molecules = 0.05 x 6.022 x 1022  x 14 electrons
 
= 4.214 × 1023 electrons

Answered by  | 13th May, 2013, 09:46: AM

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