At STP, a 5.00 L flask filled with air has a mass of 543.251 g. The air in the flask is pumped out and replaced with ano

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answerhappygod
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At STP, a 5.00 L flask filled with air has a mass of 543.251 g. The air in the flask is pumped out and replaced with ano

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At STP, a 5.00 L flask filled with air
has a mass of 543.251 g. The air in the flask is pumped out and
replaced with another gas and the flask is reweighed. The new mass
of the flask is 566.107 g. The density of the air at STP is 1.29
g/L. What is the identity of the new gas added?
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