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(Solved): At STP, a 5.00 L flask filled with atmospheric air has a mass of 543.251 g . The air in the flask is ...



At STP, a 5.00 L flask filled with atmospheric air has a mass of 543.251 g . The air in the flask is replaced with a noble gas making the new mass 566.107 g . The density of atmospheric air is

1.29(g)/(L)

. Which noble gas replaced the air in the flask?

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