For the answer to the question above,
I believe these are the choices
a) H2 and O2 are combined in a fuel cell to form water.
b)The rubber in tires is covalently crosslinked through vulcanization.
c) Sugar dissolves in water.
d) CO2(s) sublimes
e) Water moves up a narrow tube due to capillary action.
Which are classified as:
intra
intra
inter
inter
inter
