The lewis structure of bf, is usually drawn with three single b-f bonds. how does the bonding in this description differ from the mo description? (d)what are the strongest σ and strongest π interactions in this molecule? give the number any symmetry of the molecular orbitals. strongest σ (e) if a transition metal is substituted for b, the d orbitals are available. which d orbitals strongest could form molecular orbitals with the group orbitals of the following symmetries? some will have an answer of none a2 e' a2" e"

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

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 ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0