Question
Sun November 27, 2011 By:
 

what is the number of molecules present in 0.1 mole of oxygen?

Expert Reply
Sun November 27, 2011
A mole of oxygen molecules contains 2 moles of oxygen atoms. Thus "1 mole of oxygen molecules" means 6.022 x 1023 O2 molecules, or 2 x 6.022 x 1023 O atoms; "1 mole of oxygen atoms" means 6.022 x 1023 O atoms.
 
So, in 0.1 mol of oxygen has 6.022 x 1022 molecules.
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