- #1
EmmaLemming
- 19
- 0
Homework Statement
Argon (atomic weight 40) exists as a monatomic gas at room temperature and
pressure. The density of liquid argon is 1784 kg m−3.
(a) Calculate the atomic density (atoms m−3) in liquid argon.
(b) Calculate the atomic density (atoms m−3) in gaseous argon at a pressure of 1 atm and a temperature of 300K.
The attempt at a solution
(a)
PV = NkT
where,
P = 1.01 x 105
k = 1.38 x 10-23
T = 300
N/V = P/kT = 2.44 x 1025 atoms m−3
(b)
I have no idea. I know there should be a difference but I don't know what to do.
I think perhaps my answer to (a) is in fact the answer to (b) in which case, how do I answer (a)?
Argon (atomic weight 40) exists as a monatomic gas at room temperature and
pressure. The density of liquid argon is 1784 kg m−3.
(a) Calculate the atomic density (atoms m−3) in liquid argon.
(b) Calculate the atomic density (atoms m−3) in gaseous argon at a pressure of 1 atm and a temperature of 300K.
The attempt at a solution
(a)
PV = NkT
where,
P = 1.01 x 105
k = 1.38 x 10-23
T = 300
N/V = P/kT = 2.44 x 1025 atoms m−3
(b)
I have no idea. I know there should be a difference but I don't know what to do.
I think perhaps my answer to (a) is in fact the answer to (b) in which case, how do I answer (a)?