Asolution contains a mixture of pentane and hexane at room temperature. the solution has a vapor pressure of 256 {\rm torr}. pure pentane and hexane have vapor pressures of 425 {\rm torr} and 151 {\rm torr}, respectively, at room temperature.
what is the mole fraction of hexane? (assume ideal behavior.)

h let me think

the atomic mass is the bottom number on the element.

-steel jelly

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.