After 0.600 L of Ar at 1.47 atm and 221 degrees Celsius is mixed with 0.200 L of O2 at 441 torr and 115 degrees Celsius in a 400.-mL flask at 24 degrees Celsius, what is the pressure in the flask?
Here's how I go about doing this.
What we can do is use the ideal gas equation for both
I won't show the unit conversions here, as I predict you already know how; the moles of each substance is
We'll now use the ideal gas equation to solve for the pressure at the new conditions: