Five moles of electrons are present in----- grams of methane

Each carbon atom, C612 contains….6 protons, 6 electrons and 6 neutrons ;Each hydrogen atom, H11 contains….1 proton, 1 electron and zero neutrons ;Thus each molecule of CH4 contains…10 protons, 10 electrons and 6 neutrons ;Thus each mole (16 g) of CH4  contains…10 moles (10 NA) of protons, 10 moles (10 NA)  of electrons and 6 moles (6 NA)  of neutrons ;= 5×1610= 8 gm