Thursday, January 3, 2013

How many molecules of O2 and how many atoms are present in this sample?

what is the best answer to

Question by Inner Peace: How many molecules of O2 and how many atoms are present in this sample?
How many molecules of O2 and how many atoms are present in this sample?
A sample of oxygen gas 02 wighs 28.4 g. How many molecules of O2 and how many atoms are present in this sample?

What is the formula to figure this calculation? Please help. Dont know where to start!


Best answer:

Answer by varun
mass =28.4
molar mass of O=16
moles=28.4/16
=1.7750
number of atoms =10^24 (approx)
number of molecules=5*10^23



Give your answer to this question below!

Share

Popular Posts