4A1 + 302 > 2Al2O3
151 grams of Al2O3 are produced. How many moles of Al was needed
in the reaction?

It is called a neutralization reaction

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   

Idon't know hope someone you