We were given a volatile substance and a Dumas tube and told to find the moles of the unknown as well as its molar mass. We also had to measure the volume of the tube, air pressure, and the temperature at which all of the substance was a gas.
Volume=mass of water/density at 24 Celsius=17.8641g/.997296g/ml=17.9125ml
mass of the substance=.59g
PV=nRT (ideal gas equation)
The Attempt at a Solution
molar mass=mass/number of moles=.59g/.000577mol=1000g/mol which seems ridiculously high. Please help me! What did I do wrong?