I believe that crude oil is derived from plants because it is made up of a liquid that is found beneath the earth surface so I guess you could go with plants it is not an animal or rock or salt so.. could be brainliest not 100% sure so if you are not sure go with your gut
Answer:
4 moles of Na are needed.
Approximitly 0.013787375 moles
Endo is more in reactants and exo is more in products because in exothermic reactions heat is released