Re: Number of Electrons
- From: glhansen@xxxxxxxxxxxxxxxxxxxxx (Gregory L. Hansen)
- Date: Wed, 18 May 2005 13:53:18 +0000 (UTC)
In article <1116401085.456734.134610@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Zath <zath68@xxxxxxxxx> wrote:
>Just a question, If one had a block of some material, doesn't really
>matter, I'm only wondering about very ruff figures, say it was a 1cm
>cube. How many electrons could one estimate or in such a block total?
>
There are as many electrons as there are protons. Roughly half of the
mass will be protons, and half neutrons. A proton (and a neutron) weighs
about 1.67e-27 kilogram. So
(1/2) * (1/1.67e-27) = 3e26 electrons per kilogram
--
"Coincidences, in general, are great stumbling blocks in the way of that
class of thinkers who have been educated to know nothing of the theory of
probabilities." -- Edgar Allen Poe
.
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