calculate the number of electrons present in 1.6g of CH4(methane).

Asked by RIZWAN YASIN | 24th May, 2013, 08:12: PM

Expert Answer:

MW of methane = 16 g/mole
 
So, no of moles of methane in 1.6 g = 1.6 /16 g/mole = 0.1
Since, in 1 mole methane there are 6.022 x 1023 molecules of methane, 
 
so, in 0.1 mole there will be 0.1 x 6.022 x 1023 molecules of methane
 
In 1 methane molecule there are 10 electrons (6 + 4)
 
total electrons in 0.1 mole or 1.6 g = 10 x 0.1 x 6.022 x 1023 
= 6.022 x 1023 

Answered by  | 24th May, 2013, 09:22: PM

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