Posted by noclueboo on .
A 150.0 mL cylinder containing CO at a pressure of 9.50 atm is connected by a valve to 9500 mL cylinder containing B5H9 at 2280 torr pressure. Calculate the partial pressure (atm) of B5H9 when the valve is opened.

Chem 
DrBob222,
You want to know about B5H9; therefore, you can ignore the CO. The B5H9 will go from a volume of 9500 mL to a total volume of (9500+150) mL. Use
P1V1 = P2V2, solve for V2 and convert to atm.