A Sample of O₂ Is Collected Over Water at 21°C

question 115

Multiple Choice

A sample of O₂ is collected over water at 21°C. If the total pressure of the sample is 712 torr, what is the partial pressure of the O₂? The vapor pressure of water at 21°C is 18.6 torr.

• A)712 torr
• B)731 torr
• C)693 torr
• D)38.3 torr
• E)not enough information

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Definitions:

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