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Coulombs
Name: Louise
Status: student
Age: 16
Location: N/A
Country: N/A
Date: 2000-2001
Question:
How do you calculate the number of electrons in one coulomb?
Replies:
It's not a number you can calculate, really, it's just a fundamental number
that needs to be measured, like the number of molecules in a mole, the
gravitational constant, Planck's constant, the speed of light, and so forth.
That said, the information in number of electrons in one coulomb can be
expressed in different ways. One common way is the electric charge of an
electron. This is -1.60219 x 10^-19 Coulombs/electron. So the reciprocal
of this gives you electrons/Coulomb.
Richard E. Barrans Jr., Ph.D.
Assistant Director
PG Research Foundation, Darien, Illinois
The number of electrons in one coulomb is just the reciprocal of the charge
on a single electron, which is:
1.6021892*10^-19 (coulombs/electron). 1/
1.6021892*10^-19 =
6.41418*10^18 (electrons/coulomb). This is approximately 1*10^-5 mols of
electrons.
V. Calder
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Update: June 2012
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