Posted by **deb** on Monday, March 8, 2010 at 10:04am.

How many coulombs of positive charge are in 3.8 mol of O2 gas?

- physics -
**drwls**, Monday, March 8, 2010 at 10:18am
Only the ones due to protons in the nuclei, and they are all neutralized by electrons surrounding the molecules.

If they want the charge in nuclei, for 3.8 moles, that would be

3.8*32*e*(Avogadro's number)

- physics -
**deb**, Monday, March 8, 2010 at 10:50am
I came out with 1.99e26 and I got it wrong. What is the point of multiplying by e?

- physics -
**drwls**, Monday, March 8, 2010 at 11:42am
They are asking for charge (in Coulombs), not the number of protons. +e is the charge of one proton.

- physics -
**deb**, Monday, March 8, 2010 at 12:57pm
So I need to multiply by 10 not e? Is that right? So the answer should be 7.32e26

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