In the reaction h2so4 + 2 naoh -> na2so4 + 2h2o, an equivalence point occurs when 28.54 ml of 0.2075 m naoh is added to a 34.23 ml portion of h2so4. what is the [h2so4]?

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.