Final answer:
Al(NO3)3 dissolved in water breaks apart into Al3+ and NO3- ions.
Step-by-step explanation:
When Al(NO3)3 is dissolved in water, it breaks apart into Al3+ and NO3- ions. Therefore, the correct answer is B) Into Al3+ and NO3-. The dissolution process can be represented as:
Al(NO3)3 (s) → Al3+ (aq) + 3NO3- (aq)
The aluminum(III) ion actually reacts with six water molecules to form a stable complex ion, making the dissolution process more explicitly represented.