Consider the equations below. (1) fe2o3(s) → 2fe(s) + 3 2 o2(g) (2) fe2o3(s) + 3co(g) → 2fe(s)+3co2(g) which equation must be added to equation (1) to produce equation (2)?

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

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