Your ta will give you a 1h nmr spectrum of the 3-nitroaniline product. using your nmr knowledge and the special nmr section in the lab book (especially pages 48 and 49), assign the 4 peaks in the spectrum to each of the protons in the product - you will need to use coupling pattern and chemical shift to complete the assignment. (b) explain your assignment, specifically how you differentiated between ha and hc.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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