1. a. A sample consisting of 1-bromopropane and 1-chloropropane is injected intoa gas chromatograph
equipped with a nonpolar column. Which compound
has the shorter retention time? Explain your answer.
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b. If the same sample were run several days later with the conditions as nearly
the same as possible, would you expect the retention times to be identical to
those obtained the first time? Explain.