Why is it not possible to use ethanol to extract an oganic compound from wter even though most organics are more.

the answer is the first option

explanation:

just googled it m8. not that hard

lol

1.solid

2.carbon dioxide

3.helium

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.