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Old 2017-02-24, 19:32   #12
pinhodecarlos
 
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"Carlos Pinho"
Oct 2011
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Quote:
Originally Posted by Nick View Post
On the subject of unwise chemistry, this occurred last week:
https://www.theguardian.com/educatio...xplosive-scare
My friend who lecture there told me about it.
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Old 2017-02-24, 19:55   #13
chalsall
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"Chris Halsall"
Sep 2002
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Quote:
Originally Posted by pinhodecarlos View Post
My friend who lecture there told me about it.
If I may please share... I'm already under surveillance, so I have nothing to lose...

As a child I was raised around compressed Oxygen and Acetylene tanks, and many other dangerous things which I played with, including very high voltages and amperages.

It was only later in my education that the thinness of C2H2 molecule made sense to me as to why it leaked so easily.
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Old 2017-02-24, 20:58   #14
chalsall
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Quote:
Originally Posted by pinhodecarlos View Post
My friend who lecture there told me about it.
So, a PHD student mistaking made that explosive.

Is that your understanding?
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Old 2017-02-24, 21:09   #15
chalsall
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Originally Posted by chalsall View Post
So, a PHD student mistaking made that explosive.

Is that your understanding?
Sorry. Mike (AKA XYXXY) is playing god. It becomes tiring.
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Old 2017-02-24, 21:17   #16
xilman
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Quote:
Originally Posted by kladner View Post
Wow! Another special quality for tungsten, and one which seems rather unusual, too. Thanks for that bit of stray knowledge!
Actually, I was over-simplifying. Very pure tungsten is ductile at room temperature. Almost all commercially available W contains a small amount of oxygen and it's that which makes the metal brittle when cold. Extracting oxygen from tungsten isn't very easy and so the pure-enough metal is very expensive and not normally required for the great majority of uses.


Moral: never ask a chemist questions about chemistry. You will very likely be told far more than you expected and, probably, wanted.
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Old 2017-02-24, 22:27   #17
chalsall
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Originally Posted by xilman View Post
Moral: never ask a chemist questions about chemistry. You will very likely be told far more than you expected and, probably, wanted.
I disagree. Ask many questions.

Anyone buying lots of tanks should be interesting.
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Old 2017-02-25, 16:07   #18
Xyzzy
 
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Originally Posted by chalsall View Post
Sorry. Mike (AKA XYXXY) is playing god. It becomes tiring.
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Old 2017-02-25, 22:01   #19
chalsall
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Originally Posted by Xyzzy View Post
Sorry. I was trying to be playful. Probably shouldn't do that.
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