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jonbon34
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Need some mad help!

Post by jonbon34 »

A 4.37 gram sample of a certain diatomic gas occupies a volume of 3.00 L at 1.00 atm and 45 degrees C. What is the gas? :roll:
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jaelen
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Re: Need some mad help!

Post by jaelen »

jonbon34 wrote:A 4.37 gram sample of a certain diatomic gas occupies a volume of 3.00 L at 1.00 atm and 45 degrees C. What is the gas? :roll:
I used PV=nRT to get the answer.

Find the number of moles [n=(PV)/(RT)]

Divide mass by the number of moles to get the molecular mass of the entire molecule. Then divide by two to get the mass of a single atom.

It should work out to about 19 g/mol which is the molar mass of F.

So the gas is fluorine.

Hope that helped ^^
Last edited by jaelen on Sun Nov 04, 2007 8:47 pm, edited 1 time in total.
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jonbon34
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Post by jonbon34 »

Thanks alot! I really do appreciate you helping me!
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