If something has an actual yield of 2.5 grams and a theoretical yield of 10 grams, what is the percent yield? A)30%
B)25%
C)45%
D)10%

true

hope that

3 1/4 %

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.

im not exactly sure but i think its b!