Asked by Anna

Combustion of 6.38 mg of ethylene glycol gives 9.06 mg CO2 and 5.58 mg H20. The compound contains only C, H, and O. What are the mass percentages of the elements in ethylene glycol?
Answered by Temisan
make a mol fraction and then multiply by 100
Answered by Anna
but don't i have to know the formula for ethylene glycol?
Answered by Temisan
check it online. and balance the equation
Answered by DrBob222
mass percent C = (mass C/mass sample)*100 =
Mass percent H = (mass H/mass sample)*100 =
Mass percent O = 100 -%C -%H.
Answered by Bushra
My answer for the emperical formula is coming CHO but the answer is CH3O
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