Answer:
A star with 15 solar masses is too big to be a main-sequence star.
The bigger molecule has more interactions and hence the higher b.p. CH3CH2OCH2CH3 is a bigger molecule than CH4 and CH3CH3, so has more dispersion forces. It also has dipole-dipole forces due to the polarised C-O bonds. CH3OH and CH3CH2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom
God bless
Answer:
the path the object follows is called its trajectory so A. trajectory
