# A given mass of oxygen occupies 200 ml when the pressure is 400 mm of Hg. What volume will the gas occupy when the pressure is raised to 200 mmHg, provided the temperature remains constant?

##### 1 Answer

Apr 18, 2017

#### Answer:

At constant temperature,

#### Explanation:

Now we know that

So here

And

So

And we plug in the numbers, and expect reasonably that