Question: how many electrons are present in 1.6 gram of methane?
Answer: Thus, 1 molecule of methane has a total of 10 electrons. 0.1moles of methane( 1.6grams) contains '0.1 x Avogadro number' of molecules. Thus 0.1 mole of CH₄ contains "10 x 0.1 x Avogadro number" of electrons. Therefore 1.6 grams of methane contains 6.022 x 10²³ electrons.