2) You are probably starting to see that any form of rock can be changed into any other form of rock. How could a rock be changed but still be classified as the same form of rock?

3) which rock is formed from broken-down pieces of rock? How do you think these pieces harden into rocks in nature?

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   

Idon't know hope someone you

Answer:

5.6⋅10−^19  j

do you need the explaination?

Answer-ide.