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A gas at 25C exactly fills a container whose volume, previously determined, is 1.05 x 10 3 cm3. The container plus gas are weighed and

A gas at 25°C exactly fills a container whose volume, previously determined, is 1.05 x 103 cm3. The container plus gas are weighed and determined to have a mass of 654.2 g. If all the gas is removed from the container, it has a mass of 652.8 g. Calculate the density of the gas at 25°C.

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