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a) Calculate the volume occupied 1.50g 7.00g of O2 and Cl2 react when mixed without exerting a pressure 482atm to 22 degrees Celsius.

b) The Goodyear blimp contains 5.12 x 106 liters of helium at 25 degrees celsius and 1.00atm. Calculate the density of helium, g / L.

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