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Help with a chemistry density problem..?
I need help finding the density of NH3 at 800Torr and at 25Celsius. I really can't figure out how to do it, and I need to learn it so I don't want to look up NH3's density.
1 Answer
- 9 years agoFavorite Answer
You can use the equation:
P=(d)(R)(T)/(MM)
Where P=pressure in atm, so convert 800 Torr to atm. So 800torrx1atm/760torr=1.0526 atm
R=0.0821 (this is a constant that should be found in your textbook)
T=temperature in kelvin. 273K+25C=298K
MM should be molar mass of NH3=17.03 g/mol
d=density, what we're finding
So plug into equation:
1.0526atm=(d)(0.0821)(298)/17.03
d=0.7327 grams/liter
That should be it. this equation is a simple derivation of the original PV=nRT
