Starting with one mL of your unknown dipeptide, briefly describe the procedure followed to prepare the C-terminus sample for paper chromatography. For all steps where the pH is important, explain why. Include in your answer a brief explanation of how the pH of the chromatography solvent (pH ~ 3) influences amino acid separation.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt