Determine the initial pressure of N2 in the 1.00 L flask....Please help! Chemistry problem... (read on)?

Question

Consider the flask apparatus in the following diagram, which contains 2.00 L of H2 at a pressure of 360. torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 341 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00 L flask.

Apparatus looks something like 2 circle bulbs joined by one tube. The H2 and N2 gas are separated by a stopcock (located at the tube)

Answer 1

Suggest try http://en.wikipedia.org/wiki/Partial_pressure