Calculate the percent ionization of a 0.17 molL−1 methanoic acid solution in pure water. For methanoic acid, Ka=1.8×10−4 .

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

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.