Calculate the density, in g/L, of N2(g) at 715 torr and 98 °C.
2007-04-25 07:03:14 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
density of agas can be calculated from the ideal gas law
PV=nRT
But n=m/M, where m is the mass of gas and M is its molar mass
PV =mRT/M
but density= m/V= PM/RT = (715/760)*1.013 x 10^5 * 0.02801348/8.314/(98+273) = 0.866 kg/m^3= 0.866 g/L.
2007-04-25 07:54:50 · answer #1 · answered by The exclamation mark 6 · 0⤊ 0⤋
Use the ideal gas equation
PV = nRT
n = moles = mass / MM.
The MM for N2 is 28.
So the equation for density is m/V
m/V = P (28) / 0.082 T
P = 715 / 760 atm
T = 98 + 273 K
Plug in and you are done
2007-04-25 14:09:25 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋
Density = mass/volume
Start with finding volume using.
V=nRT/P
When you find Volume(V).
Use the Molecular Mass of N2 and do the math.
2007-04-25 14:12:39 · answer #3 · answered by African 3 · 0⤊ 0⤋