The general gas law can be modified for density and molar mass by
PM = dRT and since P, R, and T are remaining constant we can rewrite that as
M/d = RT/P = k
molar mass CFCl3 is 137.4; d is 5.58.
137.4/5.58 = 24.62 = k; apply that to the unknown.
M/4.38 = 24.62
M = molar mass = 4.38 x 24.62 = ?
Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?
2 answers
108