How many moles of oxygen (O2) are required to produce 40 liters of water (H2O) if there is excess hydrogen (H2)? 2 H2 + O2 → 2 H2O

40.0 moles O2

1.76 moles O2

0.89 moles O2

3.57 moles O2

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