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Determine the pressure in atm exerted by 1.00 mole of CH4 placed into a bulb with...

Determine the pressure in atm exerted by 1.00 mole of CH4 placed into a bulb with a volume of 244.6 mL at 25°C. Carry out two calculations: in the first calculation, assume that CH4 behaves as an ideal gas; in the second calculation, assume that CH4 behaves as a real gas and obeys the van der Waals equation

Explain why the values of van der Waals constant b of noble gas elements increases with atomic number?

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