As the angle of attack increases the speed of the air on the top of the wing . increases
decreases

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Change in speed or direction : )

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   

Answer:   d.  carbon dioxide.