In Part I, after you opened the stopcock, a small amount (~0.5 mL) of water is expected to have
dropped through the buret, after which the water level stabilized. This means that the trapped air in
the buret now has more volume than it did originally.
a. What was the trapped air pressure before opening the stopcock?
b. What happened to that pressure once the volume increased from opening the stopcock?
c. What simple gas law is this?
