 Let's try this determining the molar mass of the gas problem This one says the oil produced from eucalyptus leaves contains the volatile organic compound eucalyptol at 190 degrees Celsius and 60 pour a sample of eucalyptol vapor at a density of 0.320 grams per liter Calculate the molar mass of eucalyptol. Okay, so We should be able to do this using that Molar mass equation that was derived from the ideal gas law. Okay, so Why don't you guys help me out with that molar mass equation first? So if you guys remember it the molar mass equals what? density times r T yeah divided by Yeah, so remember molar mass density r. That's the gas constant. So that's got to be given to you t and p So let's write down the gas constant And I'm gonna write in fact, why don't I? Yeah, I'll just write it like this So we can remember what units we need to cancel out. Okay, so hopefully this gives us a clue to say well Or that's in the wrong units. We need atm Kelvin that's in the wrong unit. We need To change degrees Celsius to Kelvin. Okay, so Let's convert those Okay, so Kelvin ATM Leaders and we want molar mass to be in Grams per mole. So we've got grams and moles left. So this should work out So let's just plug everything into this and see if our values are units don't actually So density R 821 leader ATM or one mole Kelvin Calving by all that by the pressure 0.789 Okay? So let's see. So liters, cancels with liters, ATM, cancels with ATM, Kelvin, cancels with Kelvin, grams per mole. Grams per mole is good units for molar mass. So, of course. So to three sig figs, I get a molar mass of 154 grams per unit total. Okay? So that's how you do a problem like this. Are there any questions on something like that? Okay. I think the most important thing to do is remember your unit so you can cancel them out when you get the right answer. Okay? Good luck. All right. Good job.