How many formula units of LiCl are equal to 0.648 moles? 3.90 X 10^23 formula units of LiCL
1.75 X 10^19 formula units of LiCL
2.04 x 10^-5 formula units of LICHL​

Coal i believe hope this

Less stable  hope this

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   

I'm pretty sure its c