Question: 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

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.

P, mmHg: d, g/L: 760.00 570.00 1.428962 1.071485 380.00 190.00 0.714154 0.356985

d M V MP RT (6.14)

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