What does a subscript indicate in a chemical formula? A. The number of atoms of that element in the molecule

B. The number of bonds that element forms in the molecule

C. The position in the molecule that element occupies

D. The atomic number of the element in the molecule

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.

Why are pipes bursting in the in extremely cold weather?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver