A balloon is filled with 35.0 L of
helium when the
12
temperature is
800K. If the tem-
perature rises to
450K, what is the
new volume of the
balloon?

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   

Answer two atoms of oxygen;

The breaking apart of glucose, which involves spontaneous reactions