Staggered and eclipsed conformers of ethane are:

On Pluto,where everything is frozen,astronauts discovered two forms of butane: gauche and anti. Assuming that there are no rotations around single bonds,which statement about the two forms is correct?

The Newman projection formula of the most stable conformation of $3-$Hydroxypropanal is:

Which of the following conformations of butane is the least stable?

In $ethane$ and $cyclohexane$,which one of the following pairs of conformations are more stable?

What do you mean by dihedral angle or torsional angle?