What happens when HCl gas is passed through a saturated PbCl2 solution? More PbCl2 dissolves because chloride ions are added to the solution.
More PbCl2 dissolves because hydrogen ions are added to the solution.
Some PbCl2 precipitates because chloride ions are added to the solution.
Some PbCl2 precipitates because hydrogen ions are added to the solution.

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.

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

Which statement are accurate about snow flakes