Answer:
it lost 900J of energy I will assume and that would mean the change in energy is -900J
Explanation:
Explanation:
The given reaction equation is as follows.
+ ___ 
As there is release of one hydrogen which shows that mass number has increase by 1 on the product side.
Therefore, particle 
must be added in order to balance the given reaction equation.
Hence, the complete reaction equation will be as follows.
The second law of thermodynamics states that in a reversible process, the entropy of the universe is constant, whereas in an irreversible process, such as the transfer of heat from a hot object to a cold object, the entropy of the universe increases
Really, ionization takes place. It means the acid dissociates in water. Ionization is just a fancy way of saying dissociation. Always think easy.
Definition of IONIZATION: The process describing the dissociation of an acid in water.
If it ionizes or dissociates completely in water, then it shows that hydronium is a STRONG ACID. And if it ionizes partially, that shows hydronium is a WEAK ACID.
So, the answer will be choice B. by a process called ionization
