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kentchris38
May 3, 2011, 02:53 PM
Silane, SiH4, reacts with O2 to give silicon dioxide and water:

A 5.20 L sample of SiH4 gas at 356 mmHg pressure and 25 oC is allowed to react with O2 gas. What volume of O2 gas , in liters, is required for complete reaction if the oxygen has a pressure of 425 mmHg at 25 oC?

I understand PV=nRT in this case but we are not given the mols in order to solve for volume.

DrBob1
May 3, 2011, 03:34 PM
You are given p, V & T for silane so you can solve for moles. You know p, T & n for oxygen and can solve for the volume. Tell us how you do.