1 PM Tue 16 Feb 60%
Question 5/10
1 point
A solution is known to contain only one type of anion. Addition of Ca2+
ion to the solution had no apparent effect (all ions remained in solution),
but addition of Pb2+ ion resulted in a precipitate. Which anion is present?

How manyatoms of mercury are in 1.4214e+1 ml sample

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

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.