A 100% yield is hardly ever achieved in a chemical synthesis and one reason for this is that some of product is inevitably lost in the process of trying to purify it. For each of the synthesis, look at the purification steps in this experiment and identify some places where the product ester was lost. Explain thoroughly

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.

let that person have a turn to speak : )

i believe the answer is true.