Please help!! How many moles of NO2 are equivalent to 74.3 grams of NO2?
(N = 14.01 g/mol, O = 16.00 g/mol)

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