2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) H = -850 J 1. How much energy would be released if 5.2 moles of aluminum reacted with excess iron (III) oxide?

2. If you started this reaction with 4.9g of aluminum, how much energy would be produced?

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