The two lowest energy conformations of pentane are the antianti and the anti-gauche forms, in terms of arrangements around the two central bonds. A recent study analyzed the conformations of 3-heptyne as an "elongated" analogue of pentane, where a carboncarbon triple bond is "inserted" between C2 and C3 of pentane. Interestingly, the researchers found that in each of the two most stable conformations of 3-heptyne, C1 and C6 are nearly eclipsed (looking down the alkyne group). In one of these conformations, C4 and C7 are anti to each other (looking down the C5-C6 bond); and in the other conformation, C4 and C7 experience a gauche interaction. Draw the following: (a) A wedge-and-dash structure for each of the two lowest energy conformations of pentane. (b) A wedge-and-dash structure of the conformer of 3-heptyne that is analogous to anti-anti pentane. (c) A Newman projection that illustrates the eclipsed nature of the lowenergy conformations of 3 -heptyne. (d) Newman projections that illustrate the difference between the two lowest energy conformations of 3 -heptyne. The two lowest energy conformations of pentane are the antianti and the anti-gauche forms, in terms of arrangements around the two central bonds. A recent study analyzed the conformations of 3-heptyne as an "elongated" analogue of pentane, where a carboncarbon triple bond is "inserted" between C2 and C3 of pentane. Interestingly, the researchers found that in each of the two most stable conformations of 3-heptyne, C1 and C6 are nearly eclipsed (looking down the alkyne group). In one of these conformations, C4 and C7 are anti to each other (looking down the C5-C6 bond); and in the other conformation, C4 and C7 experience a gauche interaction. Draw the following: (a) A wedge-and-dash structure for each of the two lowest energy conformations of pentane. (b) A wedge-and-dash structure of the conformer of 3-heptyne that is analogous to anti-anti pentane. (c) A Newman projection that illustrates the eclipsed nature of the lowenergy conformations of 3