Question: which among the following has more number of molecules?
Answer: Avagadro's constant states that in every 1 mole of any substance that is in existence, has exactly 6.022 × 10²³ molecules or atoms. That means there are 1.50575 x 10²³ hydrogen molecules in 1 g of hydrogen gas. Therefore 1g of H₂ gas has more molecules than 1 g of methane gas.