Consider the reaction S(s, rhombic) + 2CO(g)SO2(g) + 2C(s, graphite) Using the standard thermodynamic data in the tables linked above, calculate the equilibrium constant for this reaction at 298.15 K. ANSWER:

the answer is

the answer is b & c i believe : )

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.