How do you explain the variation in temperature from Austin Texas to thompson Manitoba Canada

The answer is 1.82 j/g°c                  

Idon't know hope someone you

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