The density of emerald is 2.78 g/cm3. What is the volume of a 1.550 carat emerald in dm3? (one carat is equal to 200 mg)

Ur e n d is not real

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