Some hydrogen gas is enclosed within a chamber being held at 200∘c with a volume of 0. 0250 m3. The chamber is fitted with a movable piston. Initially, the pressure in the gas is 1. 50×106pa (14. 8 atm). The piston is slowly extracted until the pressure in the gas falls to 0. 950×106pa. What is the final volume v2 of the container? assume that no gas escapes and that the temperature remains at 200∘c.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Answerdormitories;

Ok, you asked the question and posted the answer on there. what do you need?