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chem question

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Q80BOY:
guys i have a chem question .. i didnt want to open a new thread just for one question .. plz help !! :)

its about Molecular formula ..

Q. An organic compound containing only carbon, hydrogen and oxygen was found to have 62.07% carbon and 10.33% hydrogen.
What is its molecular formula if Mr= 58.0?

%s confuse me !! :(

Ghost Of Highbury:
i am getting C6H12O2

Q80BOY:
Thanks adi ..

can u guide me on how u did it plz ..

thanks !! :)

Ghost Of Highbury:

--- Quote from: Q80BOY on September 15, 2009, 01:43:16 pm ---Thanks adi ..

can u guide me on how u did it plz ..

thanks !! :)

--- End quote ---


.this how i did it...

                      C              H             O

MASS/100g    62.07        10.33       27.6

MOL. MASS      12              1           16

M/MM           5.1725         10.33      1.725

m/mm/1.725     3                6           1

            emp. formula - C3H6O

Mr = 58

total mass of C + H + O = 58
58/58 = 1

Q80BOY:
ooooh .. so its the same but we just remove the %s :P

Thanks a lot adi !! (u will do gr8 in ur nov exams and AS !! ;))

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