Question

How many electrons are present in 1.6g of methane?

Answer 1

Gram-molecular mass of methane (CH4)=12+4=16gCH4)=12+4=16g
Number of moles in 1.6g of methane =1.616=1.616=0.10.1
Number of molecules of methane in 0.1mole=0.1×6.02×10230.1×6.02×1023
⇒6.02×1022⇒6.02×1022
One molecules of methane has 6+4=106+4=10electrons
So,6.02×10236.02×1023 molecules of methane have =10×6.02×1022=10×6.02×1022electrons
⇒6.02×1023⇒6.02×1023 electrons

Answer 2

Hi there,

So, no of moles of methane in 1.6 g =1.6 /16 g/mole = 0.1.

Since, in 1 mole methane there are6.022 x 1023 molecules of methane,

so, in 1.6 mole there will be 1.6 x6.022 x

1023 molecules of methane