Use Newman projection formulas for ethylene glycol (1,2-ethanediol) and butane to explain why the gauche conformer of

Question:

Use Newman projection formulas for ethylene glycol (1,2-ethanediol) and butane to explain why the gauche conformer of ethylene glycol is expected to contribute more to its ensemble of conformers than would the gauche conformer of butane to its respective set of conformers.