When 12 moles of O2 reacts with 6 moles of C10H8, how many moles of water will be produced? What is the limiting reactant?
1 C10Hg + 12 O2 --> 10 CO2 + 4 H20

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 trigonal pyramidal;

Its trait is different and it the organism survive

Hi + naoh -> h2o + nal