What mathematical models are important in chemistry?

Answer 1

Not to sound cliche but every mathematical model is important for chemistry. However, the answer does also depend on your purpose in chemistry. For academic purposes, all mathematical models discussed in class will give you information about the real world, and thus will be tested, and thus will be important. In contrast to this, if you participate in research, the mathematical models that pertain to your research will be more important than other ones.