What is the number of moles, to the nearest hundredth, of molecules in a 30.5-gram sample of iron(II) oxide, FeO? Molar Mass = 71.84 g/mol

What does that mean you dum bum

The answer to this is the 3rd choice!

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Answer: 93.8 nmexplanation: that formula will not give you the wavelength of the emitted photon, it will give you its energy.hope this : )