Answer:
I'm not 100% sure but I think it would be constant
It isn't balanced. You have 3 *H and 3 * O, so something in the first formula must be changed. Have been searching for 1 hour and can't find the answer.
Freezing the substance and condensing it will not increase the entropy of a substance. In fact, dissolving the substance into water is the only way to increase the entropy of a certain substance. The entropy increases because it diversify with each other.
# of protons + # of neutrons = mass
9 + 10 = 19
the answer is D
