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Rex Ryan mixed peroxide with yeast to generate oxygen gas and collected the gas in a graduated cylinder, using the same set up as was used in Experiment 11. He collected the following data:

Water vapor pressure at 25°C: 23.8 mmHg
Barometric pressure at 25°C: 756.0 mmHg
Volume of O2 collected: 24.0 mL

How many moles of O2 were collected?

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