Region surrounding the nucleus where electrons
are found.

The answer is 323 g.

The teacher is mostly talking about the distillation of a mixture

Ithink it’s one of those things that you put the object on

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf