The second virial coeffi cient for argon is reported versus temperature in the following table.
Explain the trend with temperature in terms of dominant intermolecular interactions. What can you say about what is happening around 410 K?

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T[K] 100 200 300 B [cm/mol] -183.5 -47.4 -15.5 400 -1 500 7 600 12 700 15 800 17.7