A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass.

HELP PLEASE

Let % = grams H = 16.35 / 1 = 16.35 moles
" C = 83.65 / 12 = 6.97 moles
Simplest ratio is 16.35 / 6.97 = 2.35 moles
Ratio C = 6.97 to H = 16.35
H /C 16.35 / 6.97 = 2.35 We need whole numbers Try multiplying by 2, 3, 4, until it works.
2.35 x 2 = 4.7 2.35 x 3 = 7.05 You can't get closer than that.
Formula is C3H7, pentene

A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass.?
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83.65% C /12 = 6.97 let C = 1

16.35 H /1.008 = 16.22 let H = 2.33

or C 1 H 2 1/3 or 7/3-------->mult by 3 --------->

C3H7(empirical formula)...looks to be a propyl radical

CnH2n + 1, so to get a real compound, multiply

by 2, to give C6H14.

that by 2