The dissolving process is exothermic when the energy

a) released in solvation exceeds the energy used in breaking up solute-solute and solvent-solvent interactions.

b) used in solvation exceeds the energy released in breaking up solute-solute and solvent-solvent interactions.

c) released in solvation is about the same as the energy used in breaking up solute-solute and solvent-solvent interactions.

d) used in solvation is less than the energy released in breaking up solute-solute and solvent-solvent interactions.

e) used in solvation is about the same as the energy released in breaking up solute-solute and solvent-solvent interactions.

The balanced chemical equation for this lab is: 3cucl2(aq) + 2al(s) 3cu(s) + 2alcl3(aq) if 10.5 g copper chloride react with 12.4 g aluminum, what is the limiting reactant?

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.

What is the lowest number energy level where a d sublevel is found