Aspecific steroid has λmax = 2.70 × 102 nm and molar absorptivity ε = 11,500 l mol–1 cm–1. what is the concentration of the compound in a solution whose absorbance at 2.70 × 102 nm is a = 0.095 with a sample pathlength of 1.00 cm?

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

Acontrol during an experiment. might change remains constant does not exist does change