You will analyze the purity of propyl-p-tolyl ether by gc. assuming that some n-pr-i (starting material) is present, which compound, n-pr-i or propyl-para-tolyl ether (product), eluted from the gas chromatography column first (had the shorter retention time). explain the order of compound elution in terms of molecular structure and boiling point. 5. using the same experimental procedure as in this experiment, explain why using para-bromotoluene and sodium n-propanoxide (which in principle, would give the same product) would not work. assign all the 'h-nmr and 13c-nmr peaks on the spectra of propyl-para-tolyl ether p 325-326.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes. which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature. sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent