A 350 mL sample of air collected at 35°C has a pressure of 550 torr. What pressure will the air exert if it is allowed to expand to 425 mL at 57°C?
We can solve this equation using the combined gas law:
Remember, always use the absolute (Kelvin) temperature when working with gas equations.
The temperature conversions are
Since we're trying to find the final pressure, let's rearrange this equation to solve for
Our known values:
Let's plug these into the equation to find the final pressure:
The final pressure after it is subjected to these changes is thus