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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: inferno_gogo on October 24, 2008, 04:55:24 PM

Title: SOLVED: Determining compound formula
Post by: inferno_gogo on October 24, 2008, 04:55:24 PM

Hello,

Thanks for checking it. I solved the problem!

Thanks
-George

Title: Re: Determining compound formula
Post by: Astrokel on October 24, 2008, 05:01:20 PM

hey inferno_gogo

Quote

So far for A, my aproach has been to mutimply the precentage by the atomic mass, and I get F = 3.57, Cl = 12.27, O = 7.49. From this I can kind of guess that there are 2 F for 5 O, because their mass is relatively close, but I predict 3O for 1 Cl.

Your approach is wrong. You should get the mole ratio instead by dividing the mass ratio with atomic mass, and not multiply. Do try again!


p.s: ok good.