If #3 L# of a gas at room temperature exerts a pressure of #7 kPa# on its container, what pressure will the gas exert if it the container's volume changes to #2/3 L#?
This question is asking us to use things we know about gasses to find the final condition after a change of one of the variables. The ideal gas law can help us:
Since we have two conditions, call them 1 and 2, we can use this expression to solve for them, i.e. in our initial conditions we have
and in our final state we have
the trick is to understand that the constant is the same in both cases (none of
We can solve this for