In order to retrieve the soluble salt from the solution, crystallization must be carried out.<span />
Answer: Exergonic reactions
Explanation: From the research I did, exergonic reactions occur spontaneously because they don't need the addition of energy to occur.
I hope this helps!
Answer:
The inner core is the Earth's "interior".
P-waves pass through both the mantle and core, but are slowed and refracted at the mantle / core boundary. Whereas, S-waves pass from the mantle to the core and are absorbed due to shear waves being incapable of transmitting through liquids. Therefore, this is (further) proof the outer core does not behave like a solid substance.
Tough question, I would suggest using Google maybe, or just plain out asking your science teacher.