posted by Rebekah .
I need to calculate the pressure exerted by the hydrogen in an eudiometer for a weighing by redox lab.
mass of Mg: .021 g
barometric pressure: 29.87 inches Hg
volume of H2 gas:
the difference between tiop water level in eudiometer = 322 mm
the difference in the top water level = 165 mm
How do I start this?
I am not certain the height of the water column.
Whatever the height, you change to mm of mercury (inchesHg= heightwater/densitymercury) . Now subtract that from barometric pressure, and you have the pressure of the water vapor.