Use the problems in this forum to jump-start your in-class exercises, out-of-class assignments, or use them in exams.
A paper by Yan, et. al. [Yan, X.-P.; Sperling, M.; Welz, B. Anal. Chem. 1999, 71, 4216-4222] describes a newly developed analytical method for the analysis of biological and environmental samples containing […]
In a recent paper [J. Chem. Educ. 1997, 74, 1108-1111], Snow, Dunn and Patel describe the experimental determination of fat in a SnickersTM candy bar. The fat was removed by extraction with […]
In determining the concentration of HCl by titrating against the primary weak base TRIS, the molarity of HCL is calculated using the following equation where GFW is the gram formula weight of […]
During lab you need to prepare a solution that is 5.00 x 10-2 M Fe(CN)63- using K3Fe(CN)6. (a) Explain how to make 500 mL of this solution so that you know its […]
Parathion, C10H16NO5PS, is a toxic organophosphorous pesticide. A recently published method [Sacks, et al. Anal. Chem. 2000, 72, 2055-2058] for parathion reports a detection limit of 10 ng/mL. Express this concentration in […]
Gratzel et. al. [Anal. Chem. 1999, 71, 2751-2756] describe the use of a diffusional microburet to transfer solutions to very small droplets of solvent. The purpose of their work is to run […]
