The overall order of a reaction is 1. the units of the rate constant for the reaction are the overall order of a reaction is 1. the units of the rate constant for the reaction are s/m2 1/m m-1s-1 m/s 1/s

the link still does not work even when adding it to the url bar

explanation:

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.