# A constant temperature, a #12*L# volume of gas in a piston, is compressed to #3*L#. If the original pressure was #41*kPa#, what is the final pressure?

##### 2 Answers

Aug 11, 2017

The pressure is

#### Explanation:

We apply Boyle's Law

The initial pressure is

The initial volume is

The final volume is

The final pressure is

Aug 11, 2017

Well, we use old Boyle's law.........and get

#### Explanation:

At constant temperature, and constant amount of gas, the product

And thus, if we solve for

The utility of this equation is that we can use whatever whack units of volume and pressure we like,

And so...