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Which of the following represents the enantiomer of A?

Which statement(s) is/are true regarding leaving groups? I. Weak bases make good leaving groups. II. Large, polarizable anions make good leaving groups. III. Alkyl groups make good leaving groups. IV. Leaving group ability is only important for S N 2 reactions.  

In a unimolecular elimination (E1) reaction, the correct order of mechanistic steps is ©GMU@X@user.pk_string@X@ Do_NOT_Copy_or_Post_©GMU@X@user.pk_string@X@

What is/are the major product(s) of this dehydration reaction?        ©GMU@X@user.pk_string@X@ Do_NOT_Copy_or_Post_©GMU@X@user.pk_string@X@

The following structure has been drawn without formal charges. Which statement describes the missing formal charge(s)?

What is the effect of halving the amount of ethanol for this reaction?       ©GMU@X@user.pk_string@X@ Do_NOT_Copy_or_Post_©GMU@X@user.pk_string@X@

Which side of the following equilibrium is favored?

What is/are the major product(s) of this reaction?      ©GMU@X@user.pk_string@X@ Do_NOT_Copy_or_Post_©GMU@X@user.pk_string@X@

The following structure has been drawn without formal charges. Which statement describes the missing formal charge(s)?