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Dumas

Dumas --> foot yaws

(Science: dermatology) yaws of the feet with keratoderma of the palms and soles and ulcer formation.

Synonym: crab yaws, dumas, tubba, tubbae.


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Chemistry

An organic chemist isolates a colourless liquid with the properties of cyclohexane with molar mass 84.2g/mol from a petroleum sample. She uses the dumas method and obtains the following data to determine its molar mass: volume of flask=213ml Temperature=100celsuis mass of flask+gas=78.416g mass ...

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by Cyndyflirty2000
Sun Mar 13, 2011 9:07 am
 
Forum: General Discussion
Topic: Chemistry
Replies: 0
Views: 756

Re: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID

Thanks for all your input guys. I am just finishing my lab report right now. This is off topic, but do you guys know a good website where I could get some lab gear, more specifically a light microscope? Thanks.

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by Darwin420
Wed Oct 22, 2008 5:47 pm
 
Forum: General Discussion
Topic: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID
Replies: 11
Views: 24743

Re: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID

Yes, the whole point was to convert the methanol into a gas, that is why we are using this equation in the first place. The volume I am using in these equations are the volume of the flasks we have been using not the volume of the methanol. When it comes to molarity we weren't given it in this exper...

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by Darwin420
Mon Oct 20, 2008 8:56 pm
 
Forum: General Discussion
Topic: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID
Replies: 11
Views: 24743

DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID

Ladies and Gents, I am having a bit of a difficulty writing this lab report and I would like some insight! Ok, so I conducted this experiment where I was given methanol. I placed methanol in a flask, put tine foil over the end, poked to holes in it and placed it in a hot bath. I measured the flask b...

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by Darwin420
Mon Oct 20, 2008 6:22 pm
 
Forum: General Discussion
Topic: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID
Replies: 11
Views: 24743


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