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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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diggy6983 diggy6983
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8 years ago
how many xenon atoms are in 10.0l of Xe gas at STP?
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8 years ago
One mole of Xe occupies 22.4 L

You only have 10.0 L so the number of moles of Xe you have is 10.0 / 22.4 = 0.4464 mol

Now, one mole of anything has 6.023 x 10^23 particles. You don't have one mole but simply multiply 0.4464 mol by 6.023 x 10^23 to find the number of atoms of Xe.
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