How many molecules of dinitrogen pentoxide are in 1.39 moles of dinitrogen pentoxide

Explanation:

According to Avogadro's number, it is known that there are atoms present in 1 mole of a substance.

Therefore, molecules or atoms present in 1.39 moles will be as follows.

             No. of atoms = no. of moles × Avogadro's number

                                    =

                                    = atoms

Thus, we can conclude that there are atoms of dinitrogen pentoxide in 1.39 moles.

it's all four options.