A student dissolved a 40-gram block of salt in 100 grams of warm water at 45°C. The solution was allowed to cool down to 24°C. The student
noticed that some of the salt came out of the solution and settled to the
bottom of the beaker. It is later determined that 12 grams of the salt came
out of the solution. How many grams of the salt were dissolved in the
solution?

answer: c

explanation:

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

thats not a question