Determine the [OH-] of 0.10 M HCI.

Answer) by studying proton collisions hope this : )

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   

English , i don't understand spanish.

Answer earth,water,fire and air;