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The compression factor (compressibility ...

The compression factor (compressibility factor) for one mole of a van der Waals gas at 0°C and 100 atmospheric pressure is found to be 0.5. Assuming that the volume of a gas molecule is negligible, calculate the van der Waals constant a.

A

2.6

B

1.25

C

1.4

D

1.75

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