Percent Composition of Carbon in Dimethylsulfoxide (C2H6SO4)

AI Thread Summary
The discussion centers on calculating the percentage of carbon in dimethylsulfoxide (C2H6SO4). The initial calculation yielded 19%, but the correct percentage is 30.7%. The confusion arose from the incorrect molecular formula; the correct formula is (CH3)2SO. The total mass of the compound should be 78, not 126, leading to the correct calculation of carbon's percentage. Accurate chemical formulas are crucial for correct percentage calculations in chemistry.
priscilla89
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Homework Statement



What is the percentage of carbon in dimethylsulfoxide, C2 H6 SO4?

Homework Equations



mass of C / total mass x 100 = percentage of carbon

The Attempt at a Solution



The total mass = 126

total mass of C = 24

Wouldn't it be 24 / 126 x 100 = 19 %

But somehow I got this wrong, it's 30.7 %

Any help will be appreciated, thanks a lot
 
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priscilla89 said:

Homework Statement



What is the percentage of carbon in dimethylsulfoxide, C2 H6 SO4?

Homework Equations



mass of C / total mass x 100 = percentage of carbon

The Attempt at a Solution



The total mass = 126

total mass of C = 24

Wouldn't it be 24 / 126 x 100 = 19 %

But somehow I got this wrong, it's 30.7 %

Any help will be appreciated, thanks a lot

Are you sure of your formula for dimethyl sulfoxide?
 
sjb-2812 said:
Are you sure of your formula for dimethyl sulfoxide?

Yes, but I think somehow it's the formula that's wrong.
 

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