PV = nRT (from the ideal gas equation)
P = 0.9900atm
V = ?
n = ?
R = molar gas constant, 0.082atm.dm³.mol⁻¹.K⁻¹
T = (55 + 273)K = 328K
Here we have two unknowns, n and V.
We arrange them both on one side.
Remember, n (mol) =
The equation now becomes,
Multiply both sides by
Now again, we have V and mass on one side, and we're solving for density.
But density is equal to mass/volume
Therefore, our m/v, which is density, is equal to;
We have extracted all values, except the molar mass.
Molar mass of CO₂ = 12 + (16 × 2) = 44gmol⁻¹
Substituting all values in our equation, we have;
d= d = 1.62g/L
Ah! But density is g/dm³ abi? Yes, 1dm³ = 1L, so our units are still correct.Found my answer useful? Please vote as best answer.