Question

how many number of my present in one mole of Methane

Answer 1

in 1 mole of any atom
$6.022 \times {10}^{23}$
molecules are present
hence answer is above

Answer 2

number of electrons present in 1 mole of methane(CH4); {1(6)+4(1)}=10Number of electrons present in 1 molei.e.6.023*10 power 23 molecules ofmethane=6.022*10 power 23*10=6.022*10 power 24