When iron rusts in air, iron (iii) oxide is produced. how many moles of oxygen react with 2.4 mol of iron in the rusting reaction shown below ?

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