Strychnine (C21H22N2O2)(C21H22N2O2), a deadly poison used for killing rodents, is a weak base having Kb=1.8×10−6Kb=1.8×10−6. Part A Calculate the pHpH of a saturated solution of strychnine (16 mg/100mLmg/100mL).

What filament and tubules give a cell its shape

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.