of and of have: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

Both are 1 mole ($N_A$ molecules). $CH_4$ has 5 atoms, $O_2$ has 2 atoms. Mass $CH_4=16\text{g}$, $O_2=32\text{g}$. Both occupy $22.4\text{ L}$ at STP.