# A 4.0 L sample of hydrogen gas at 700 mmHg would occupy what volume at 250 mmHg?

##### 1 Answer

#### Explanation:

We can calculate the answer using Boyle's Law which shows that there is an inverse relationship between pressure and volume as long as the temperature and number of moles remain constant.

The equation we use is:

The first volume has a value of

All we have to do is rearrange the equation to solve for

We do this by dividing both sides by

Now all we have to do is plug in the given values: