Using the data tables in the textbook, calculate the vapor pressure of CH3OH (l) at 298.15 K if He is added to the gas phase at a partial pressure of 200 bar. By what factor does the vapor pressure change

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.

window cleaner is ammonia dissolved in water. this is an example of a