A Sample of Hydrogen Gas Was Collected Over Water at 21°C

question 80

Multiple Choice

A sample of hydrogen gas was collected over water at 21°C and 685 mmHg.The volume of the container was 7.80 L.Calculate the mass of H₂(g) collected.(Vapor pressure of water = 18.6 mmHg at 21°C.)

• A)0.283 g
• B)0.572 g
• C)0.589 g
• D)7.14 g
• E)435 g

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