Someone please help me answer this i’m struggling and i will give branliest

Explain which atom l or m is more stable and why

In apex! a liquid heated beyond a certain temperature becomes

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?