[jylxox]

In the figure above, the pressure of the gas in the 1.00 L bulb is 650mm Hg and that of the gas is the 0.500 L bulb is 439mm Hg
What is the pressure (atm)of the system when both valves are opened, assuming the temperature remains constant ?
(neglect the volume of the capillary tube connecting the bulbs)

I know that I can use PV=nRT and then get P1V1=P2V2
but I'm not sure how to use it. Since I have all 4 variables.

[Borek]

No picture, but from your description it seems like you can calculate number of moles of mercury in both bulbs, and you know total volume it will occupy.

[billnotgatez]

moles of mercury

i think this is a typo

[Borek]

Yep, mind slip, brain fart, whatever. Moles of anything that is in the bulbs.

Thank you for a vigilance