Which industry requires the most water?

petroleum
paper
automobile
steel

Wagons/motorized vehicles

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   

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

Depends on the speed of the car.