Homework Help: Chemistry

Posted by Louis on Sunday, September 18, 2011 at 10:20pm.

Helium gas is added to a 2.00 L container at 23 degrees Celsius containing Neon and Argon with a pressure of 725.3 mm Hg, what is the mass of Nitrogen added if the pressure is increased by 50%.

Chemistry - DrBob222, Monday, September 19, 2011 at 12:38am
Use PV = nRT and solve for n with the original mixture of Ne and Ar. Then use PV = nRT with P increased by 50% and solve for n.
n2 - n1 = moles N2 added.
n = grams/molar mass. Solve for grams.

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