Gas collection tubes or eudiometers

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smiley
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Joined: 20 Nov 2006, 10:00
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Gas collection tubes or eudiometers

Post by smiley »

Hey guys,

I have a question about graduated glass gas collection tubes - not gas jars but those things like long skinny test tubes with graduations on the side.

They all seem to have a "header" space at the top. If we're using them for a stoichiometry experiment, then how do we take into account that initial space there? I mean, apart from simple deduction. Why is it even there?
Cheers, K 8-)
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