A sample of carbon monoxide occupies 2.44 L at 295.0 K and 771 torr. Find its volume at -47 degrees Celsius and 350 torr?
The key to solving this problem is to realize that a mercury column is used as a highly visual measure of pressure. One atmosphere of pressure will support a column of mercury that is
....And thus we can use the length measurement to represent pressure...We also realize that we must use
So we solve for
Of course, I could have reduced each pressure measurement to units of
Do you see how the units cancel in the expression to give an answer in
As there are a constant number of moles: