The reaction of 1-chlorobutane with a boiling sodium hydroxide solution is a two-phase reaction.  When the two-phase reaction is completed, why does a homogenous solution result?    

The reaction of benzyl bromide (C6H5CH2Br) with azide ion (N3-) is shown below.  When the benzyl bromide concentration is doubled and azide concentration is held constant, the reaction rate is observed to increase by a factor of two.  When the azide concentration is doubled and the benzyl bromide concentration is held constant, the rate of the reaction doubles.  What is the correct rate law for this reaction?                                                C6H5CH2Br  +  N3- ——>  C6H5CH2N3  +  Br- I.   Rate = k [C6H5CH2Br ]2 [N3- ]2 II.  Rate = k [C6H5CH2Br ]2 [N3- ] III. Rate = k [C6H5CH2Br ]4 [N3- ]2 IV. Rate = k [C6H5CH2Br ] [N3- ]

Before patients are prescribed bisphosphates what must the patient have normal levels of?

Which of the following solvents may be classified as polar and protic?  

Which of the following is the best nucleophile?    

Which one of the following correctly describes the reaction below?      

The structures below are:                  

The rate of precipitate formation increases for the reaction of 1-bromobutane with NaI as the concentration of NaI is increased.  When the concentration of NaI is increased in the reaction of 2-chloro-2-methylpropane, no rate change is observed.  Why is there a change in rate in the first case and not in the second?    

The absolute configuration at the asymmetric carbon center in the following molecule is ______.

Phenylalanine is an amino acid that is essential to human nutrition. The representation below shows the structure of phenylalanine at physiological pH. In this representation of phenylalanine, the formal charges on N and the oxygen labelled B are _________________________ respectively.