Compared with gases, liquids:
a. have stronger intermolecular attractions.
b. have more space between their particles.
c. are much less dense.
d. are more easily compressed.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

im not exactly sure but i think its b!