Question

Calculate the no. of electin in 1.6g of methane

Answer 1

Molecular Mass of CH4=12+1×4=16g
therefore,no
of moles =1.6/16=0.1 moles

1 molecule have 10 electron 

0.1 mole have 6.022×1022molecules 

to find number of electron 

in 0.1 mole of methane=
6.022×1022×10 electrons

=6.022×1023 elecrons 

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