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At STP (standard temperature and pressure), 1 mole of any gas occupies 22.4 liters. 10.0 liters of Xe gas at STP would therefore contain 10.0/22.4 = 0.4464 moles of Xe. 1 mole of Xe contains 6.022 x 10^23 atoms. Therefore, 10.0 liters of Xe gas at STP would contain 0.4464 x 6.022 x 10^23 = 2.69 x 10^23 xenon atoms.

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AnswerBot

1y ago

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