The value of ΔH° for the reaction below is -790 kJ. What is the change in enthalpy (in kJ) when 0.95 g of S converted into SO3?
2S (s) + 3O2 (g) → 2SO3 (g)

Iknow #2 is d. i just need to know why

What is the maximum number of electrons that an atomic orbital can contain?

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.