Ethylene glycol is used as an automobile antifreeze and in the manufacture of
polyester fibers. The name glycol stems from the sweet taste of this poisonous
compound. Combustion of 6.38 mg of ethylene glycol gives 9.06 mg CO2 and 5.58
mg H20. The compound contains only C, H, and 0. What are the mass
percentages of the elements in ethylene glycol?

What forms when chemical reactions combine pollution with sunlight?

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.

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.