For 1,2-dibromoethane, the energy of "anti" conformation (1) is 1.0 kJ/mol lower than the energy of "gauche" conformations (2 and 3). Assuming that number of molecules in the eclipsed conformations (shown on top) is negligible, what % of 1,2-dibromoethane will be in "gauche" conformation at 300K.

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Q: equatorial

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Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.