$\mathbf{\rho}\mathbf{}\mathbf{=}\frac{\mathbf{m}}{\mathbf{V}}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\mathbf{PV}\mathbf{}\mathbf{=}\mathbf{}\mathbf{nRT}\phantom{\rule{0ex}{0ex}}\mathbf{PV}\mathbf{}\mathbf{=}\frac{\mathbf{m}}{\mathbf{MM}}\mathbf{RT}\phantom{\rule{0ex}{0ex}}\mathbf{PV}\mathbf{\times}\mathbf{MM}\mathbf{}\mathbf{=}\mathbf{}\mathbf{mRT}\mathbf{}\phantom{\rule{0ex}{0ex}}\frac{\mathbf{m}}{\mathbf{V}}\mathbf{=}\frac{\mathbf{P}\mathbf{\times}\mathbf{MM}}{\mathbf{RT}}\phantom{\rule{0ex}{0ex}}\mathbf{\rho}\mathbf{}\mathbf{=}\frac{\mathbf{P}\mathbf{\times}\mathbf{MM}}{\mathbf{RT}}$

You may want to reference (Pages 408 - 410) Section 10.5 while completing this problem.

Rank the following gases from least dense to most dense at 1.00 atm and 298 K: SO_{2}, HBr, CO_{2}.

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