How Many Moles of Argon Gas Are in a Sample

question 1

Multiple Choice

How many moles of argon gas are in a sample that is collected over water at 27 ° C (vapor pressure of water is 27 torr) if the volume of the gases is 430 mL and the atmospheric pressure is 754 torr?

• A) 0.0123 mol
• B) 1.67×10² mol
• C) 2.23×10² mol
• D) 2.00×10² mol
• E) none of these

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