A 50.0 ml volumetric flask filled with aqueous solution of hydrogen peroxide has a total mass of 88.5 g . The mass of the volumetric flask is 16.5g . what is the density of the aqueous solution of hydrogen peroxide?

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