Q 8

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Q 8

Post by Nur Athirah Lim on Thu Sep 02, 2010 7:29 am

confused
what i did for this question is

1. 32/16=2mol

relative molecular mass of oxygen is 2(16) = 32

2. 2x6x10^23= 1.2x10^24

no of moles of oxygen is 1

why the answer is wrong???


Last edited by Admin on Thu Sep 02, 2010 8:21 am; edited 1 time in total (Reason for editing : Incorrect number of moles determine)

Nur Athirah Lim

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Re: Q 8

Post by nur farah anis on Thu Sep 02, 2010 7:31 am

i also dun know?? who can help us???
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Guide to answer Question 8

Post by Admin on Thu Sep 02, 2010 8:23 am


  1. Determine the no of moles of oxygen gas
  2. Find the no of molecules by using the relationship between no of moles & Avogadro Constant

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Re: Q 8

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