In the laboratory, a student dilutes 13.8 mL of a 10.7 M perchloric acid solution to a total volume of 125.0 mL. What is the concentration of the diluted solution? Concentration= ___M​

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.

a corroding iron, if that's one of your choices

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b