You want to test the effect of ph on the distribution of artemia in your 35cm long testing chamber. if you measure a ph = 1 at one end of the chamber and a ph = 13 at the other end, and the gradient distribution along the testing chamber is linear, what would you predict the ph to be 10 cm from the most acidic end?

The pH to be 10 cm from the most acidic end is 3.42.

Explanation:

The pH at one end = 1

The pH at another end = 13

Length of the chamber = 13 cm

Change in pH with respect to length of the chamber from acidic end =

So, the pH of the chamber  10 cm from the most acidic end:

The pH to be 10 cm from the most acidic end is 3.42.

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.