The equation d/P = M/RT, which can be derived from equation (6.14), suggests that the ratio of the density (d) to pressure (P) of a gas at constant temperature should be a constant. The gas density data at the end of this question were obtained for O₂(g) at various pressures at 273.15 K.

Eq. 6.14

(a) Calculate values of d/P, and with a graph or by other means determine the ideal value of the term d/P for O₂(g) at 273.15 K.

(b) Use the value of d/P from part (a) to calculate a precise value for the atomic mass of oxygen, and compare this value with that listed on the inside front cover.

Transcribed Image Text:

d M V MP RT (6.14)