What is a molecular dipole moment?

a. a net cancellation of charge separation due to symmetry of the molecule
b. a separation of charge forming a positive and a negative end of a molecule
c. a separation of charge characterizing a nonpolar covalent bond
d. the arrangement of charges around an atom in a nonpolar molecule

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.