Mrs. Gaubert wanted to know which type of liquid would make a nail rust the fastest in a month. She placed 1 nail in 4 glasses that were filled with Coke, Water, Gatorade and Milk. In this scenario, what is the dependent variable? Question 1 options:

A. time it takes for rust to form

B. the amount of liquid in each glass

C. type of liquid

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.