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?
about 20 degrees
about 101kPa (1 atm) pressure
what are some assumptions surrounding the ideal gas?
random motion
elastic collisions
negligible size
no intermolecular forces
