What is a metal that forms two types of oxides and rusts in moisture​

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What reaction is taking place? 02 + c3h8 = h20 + co2

What is the correct term for living the most sustainable life you can within your current circumstances?