A ridged 1.0L cylinder contains 1.0 moles of O2, gas at 25.0°C and another ridged 1.0 L cylinder contains 1.0 moles of CH4. gas at 25.0°C. Is the average speed of the O2 gas particles greater than, less than, or the same as the average speed of the CH4 gas particles? Justify your answer

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