¿Qué es una solución? ¿Qué son el soluto y el solvente?

¿Por qué el agua es un solvente universal?

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.

To calculate the molarity of a solution, you need to know the moles of solute and the

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus