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help identifying a strange tube

help identifying a strange tube - Chemistry Forum

help identifying a strange tube - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 10-21-2003, 08:34 PM
dt
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Default help identifying a strange tube



In cleaning out the lab, I found a sealed tube containing small
amounts of mercury and a dark red crystal. This was probably used as
a chemistry demonstration about 30+ years ago. Anybody know what it
might be? TIA
Diane
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  #2  
Old 10-21-2003, 09:54 PM
Steve Turner
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Default help identifying a strange tube

[Only registered users see links. ] (dt) wrote:


Pure guess: the red crystal is mercuric oxide (HgO). Priestley
originally prepared oxygen by heating HgO, via focused sunlight, under
a bell jar. Your sealed tube might be for a similar demonstration,
though due to the [modern] imperative of preventing mercury release
into the environment, the evolved gas cannot be measured.

Steve Turner

Real address contains worldnet instead of spamnet
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  #3  
Old 10-21-2003, 10:10 PM
Keith Michaels
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Default help identifying a strange tube

In article <[Only registered users see links. ] >,
[Only registered users see links. ] (dt) writes:
|> In cleaning out the lab, I found a sealed tube containing small
|> amounts of mercury and a dark red crystal. This was probably used as
|> a chemistry demonstration about 30+ years ago. Anybody know what it
|> might be? TIA
|> Diane

Could be a cinnabar crystal, mercury sulphide, if it has six faces tapering
to a point.
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  #4  
Old 10-21-2003, 11:09 PM
Repeating Decimal
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Default help identifying a strange tube

in article [Only registered users see links. ], dt at
[Only registered users see links. ] wrote on 10/21/03 1:34 PM:


Mercury oxide? But is it a single crystal?

Bill

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  #5  
Old 10-22-2003, 04:19 AM
Muhammar
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Default help identifying a strange tube

[Only registered users see links. ] (dt) wrote in message news:<d9b5ab27.0310211234.2672779f@posting.google. com>...

It is probably Red Mercury. Please return it to Russians or CIA and
forget all about it - or they would have to, you know, pay you a
vist.
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