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f. An undergraduate student completes a gas chromatography experiment. The person runs the column at 95°C for an initial analysis of n-propanol. A peak is observed at 4.2 minutes. Next,

a mixture of unknown organic compounds is injected into the same column that has the same temperature. The student observes peaks at .1, 4.2, and 7.4 minutes. What conclusion(s) can be drawn from the experiment?

Fig: 1