I think 3 of them are its been 1 half years since ive done this i dont take chemistry anymore
Sorry I’m only answering so I could upload
According to Avogadro constant 1 mole = 6.02 x 10^23 what about 9.25 x10 ^21
that is 1 mole x ( 9.25 x10 ^21) / (6.02 x10^23) = 0.0154 moles