A generalized model used to explain how something happens and is used to predict answers to related evidence and problems is a . law
theory
hypothesis
fact

A generalised model used to explain how something happens and is used to predict answers to related evidence and problem is theory I think because it is not proved experimentally and it may give answers so according to my understanding the best answer is theory.

Explanation:

Hope it will help :)

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

i think it is true since you can test the answer and can use observations to complete it.