A gas mixture consists of N2, O2, and Ne, where the mole fraction of N₂ is 0.55 and the mole fraction of Ne is 0.25. If the

Question

A gas mixture consists of N2, O2, and Ne, where the mole fraction of N₂ is 0.55 and
the mole fraction of Ne is 0.25. If the mixture is at STP in a 5.0 L container, how
many molecules of O₂ are present?
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Note: Scientific notation should be entered as shown: 2.00 x 108 can be entered as
2.00x10^8 (without any spaces)

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