If 50. 0 kg of ammonia and 100. 0 kg of oxygen are fed to a batch reactor, determine the limiting reactant, the percentage by which the other reactant is in exces.

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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