1. What mass of sodium fluoride is produced when 58.7 g of sodium chloride reacts with 29.4 g of fluoride gas? (1 pt for reaction, 4 pts for work, 1 pt for answer)

Iknow #2 is d. i just need to know why

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

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.