Choose saturated fatty acid that should melt below 30 ∘C.
A. n-tetradecanoic acid
B. benzoic acid
C. n-octanoic acid
D. n-octadecanoic acid

Draw the molecule.

false

because it does not have the potential to be entirely used up

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.