Question
Sat February 04, 2012 By: Lahari Nibhanupudi
 

What is the charge on 500cc of water due to protons?

Expert Reply
Mon February 06, 2012

500 cc = 500 ml = 500 gm

so,

the number of moles of water = 500 / atomic weight = 500 / 18 = 27.78 moles.

thus, the number of molecules would be = number of moles X Avagadro's Number

 

or 

the total number of molecules = 27.78 X 6.023 X 1023 = 1.67 X 1025

 

and each water molecule has 10 protons in it. thus total number of protons in 500 cc of water would be

 = total number of molecules X 10

= 1.67 X 1026 protons

 

 the total protonic charge = number of protons X protonic charge

 Q = ne

 Q = 1.67 X 1026 X 1.6 X 10-19 C

 

 total charge due to protons in 500cc of water

Q = 2.67 X 107 C 

 
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