ideal gas equation Flashcards
1
Q
molecular mass
A
mass of one molecule
2
Q
relative molecular mass
A
molecular mass given relative to the mass of carbon 12
3
Q
molar mass
A
mass of one mole of a gas
4
Q
one mole of a gas
A
contains 6.02 x 1023 particles
avogadro constant, NA
5
Q
molar mass
A
- mass that 1 mole of a susbtance would have (usually in grams)
- equal to the relative molecular mass
6
Q
how are number of moles, number of molecules linked
A
N = nNa
7
Q
Boltzmann’s constant
A
- k = R / NA
- gas constant for one particle of gas
8
Q
what happens when a gas expands or contract at constant pressure
A
- work must be done
- normally involves transfer of heat energy
- W = pΔV
9
Q
derive the pressure of an indeal gas on one wall of a box, in the X direction
A
10
Q
derive the perssure of ideal gas in all three direction
A
11
Q
root mean squre
A
- average squre speeds of all particles
12
Q
what are the assumption in kinetic theory
A
- molecules continually move about randomly
- follows Newton’s laws
- collision between molecules themselves or walls of container are prefectly elastic
- except during collision, molc always move in straight line
- any forces that act during collision last for much less time than time between colllisions
