7. Calculate the percentage composition of the gas mixture from the following data obtained from the gas chromatography of this mixture:
option number 7
Gas S, mm2 k
Propane 155 0.68
Butane 216 0.68
Pentane 22 1.11
Cyclohexane 48 0.85
Propylene 22 0.65
S is the area of the chromatogram peak, mm2; k is the correction factor.

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