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van der Waals constant

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A certain gas obeys the van der Waals equation with a = 0.76 (m^6) Pa/(mol^2). Its volume is found to be 4.00 x 10-4 (m^3)/mol at 288 K and 4.0 MPa. From this information, calculate the van der Waals constant b. What is the compression factor for this gas at the prevailing temperature and pressure?

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7. A certain gas obeys the van der Waals equation with a = 0.76 m6 Pa/(mol2). Its volume is found ...

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