7. 7 kg of neon is stored in a rigid tank at three times atmospheric pressure and a temperature of 70oC. 30 kJ of heat is added to the neon. What is most nearly the final temperature of the neon

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   

Ais stronge

The answer to your question would be c. mineral oil