Re: Tires Gradually Go Flat in Storage

In article
<UydWi.40913$kj1.40569@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
et>,
"Leo Lichtman" <l.lichtman@xxxxxxxxxxxxxxxx> wrote:

"Michael Press" wrote: (clip)Publish the numbers and
cite your references as others do.
^^^^^^^^^^^^^^^^^
A hydrogen atom consists of one proton in the nucleus, with one electron
orbiting around it. A hydrogen molecule consists of a pair of hydrogen
atoms which complete their electron shells by sharing their electrons. A
helium atom consists of a nucleus with two protons, and two electrons
orbiting around it. Thus, they have the same molecular weight, but the
hydrogen molecule is approximately twice as large, because the protons are
not together in the same nucleus. The actual sizes do not need to be known
for this to be understood.

Will _you_ publish some numbers.

In article
<Ptmdnb7hmZyJZrranZ2dnUVZ_s7inZ2d@xxxxxxxxxxxxx>,
jim beam <spamvortex@xxxxxxxxxxxxxxx> wrote:

yeahbut, the molecular size of H2 is much larger than the atomic size of
He. that also affects diffusion rate.

What are the sizes? What is "much larger"?

--
Michael Press
.

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