Question

10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x.
then i used PV*GFM=mRT.
(x)(50.0L)(60)=30.0G(62.4)(303). The correct answer is 322 mmHG. But i'm not getting that. can anyone help? thanks:)

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