amount of substance (gases) Flashcards
define molar gas volume
the volume per mole of gas molecules at a stated temperature and pressure
what is the equation involving molar gas volume and amount of substance (n)?
amount of substance (n) = volume V/ molar gas volume Vm
what is the ideal gas equation?
pV = nRT
what does p stand for in the ideal gas equation and what is the unit?
pressure, Pa
what does V stand for in the ideal gas equation and what is the unit?
volume, m3
what does n stand for in the ideal gas equation and what is the unit?
amount of gas molecules, mol
what does R stand for in the ideal gas equation?
the ideal gas constant, 8.314J mol-1K-1
what does T stand for in the ideal gas equation and what is the unit?
temperature, kelvin
how do you convert from cm3 to m3?
x10^-6
how do you convert from dm3 to m3?
x10^-3
how to you convert from degrees Celsius to kelvin?
+273
how do you convert from Kilopascals to Pascals?
x10^3
what is the equation for n at RTP (room temp + pressure)?
n = V(dm3)/24 or n = V(cm3)/24000
what is room temperature and pressure?
298K
about 101kPa (1 atm) pressure
what are some assumptions surrounding the ideal gas?
random motion
elastic collisions
negligible size
no intermolecular forces