Explain with steps plz

∆TF C12 H22 O11 = 0.3 × 1

= 0.3

Answer is right

it should be all of them because it asks if you included all of those in your answer

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.