Is it possible to have a macroscopic sample of oxygen that has a mass of 14 atomic mass units?
A) Yes,but it would need to be made of oxygen atoms that each had less than the normal number of neutrons.
B) No,this is less than than the mass of a single oxygen atom.
C) Yes,but it would have the same density as nitrogen.
D) No,because oxygen is a gas at room temperature.
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