Explain the observed stereochemistry. When the second intermediate is redrawn from the following perspective, it becomes clear that

2) Draw the product of the following pericyclic reaction. light Show how you formed the product by addressing the following points: a) Is the reactant using its HOMO or LUMO to complete the pericyclic movement of pi electrons? Draw all the lobes of the p orbitals of the pi bonds and designate the signs on each orbital to show the number of nodes corresponding to your choice of HOMO or LUMO. b) Is the reaction proceeding via conrotatory or disrotatory rotation of the outer lobes? Show the direction of the movement of p orbitals by drawing arrows.

Draw the possible products of this epoxide ring-opening reaction. Use a dash or wedge to indicate the stereochemistry of substituents on asymmetric centers, where applicable. Ignore any inorganic byproducts.

The rate of bromination of the following three alkenes: 2-methyl-1-pentene, 2-methyl-2-pentene, 3-methyl-1-pentene. Please rank them in order from slowest to fastest to react.   Thank you