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## Homework Statement

Based on the “National Ambient Air Quality Objectives”, the acceptable hourly average concentration of carbon monoxide (CO) is 35 mg/m^3.

Find the acceptable concentration of CO in ppm if the temperature is -30 °C and pressure is 0.92 atm.

Express the concentration as a percent by volume.

## Homework Equations

PV = nRT (maybe)

## The Attempt at a Solution

Hello, everyone!

Could someone please help me understand how to do the problem above?

So far, I get the following.:

101.325 kPa * V = (35E-3 g / 28.01 g) mol * 8.31 kPa L / (mol K) * (-30 + 273.15) K

V = 0.0249180252056537913 L

Am I on the right track? If so, what do I do next? If not, then what must I do?

Any input would be greatly appreciated!

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