Which is not true about 1mole of oxygen gas at S.T.P? A)it occupies 22.4litters B) it's gram molecular mass is 16gram C) it's gram molecular mass is 32gram D)none? Thanks

1 Answer
anor277
Nov 10, 2017

#B# is incorrect....

Explanation:

Oxygen, as are most of the elemental gases, is binuclear, i.e. we speak of the dioxygen molecule, #O_2#. Given a mole of oxygen gas, i.e. dioxygen gas, we got a mass of..............

#1*molxx32.0*g*mol^-1=32.0*g#.

The mass of a #"mole of oxygen atoms"# is #16.0*g#.

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