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physicsman2

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## Homework Statement

NO2 is a known air-pollutant resulting from the combustion of petroleum in vehicles. Suppose at 6:00 am, there are 0.920 ppm NO2 in a liter of air. Calculate the mass (in grams) of the NO2 present in a liter, assuming there are 2.46x10^22 molecules of air in 1.00 L. (1 ppm = 10-6)

## Homework Equations

particle to mole to mass conversion

PV=nRT(maybe)

## The Attempt at a Solution

I have no idea how to do this. The only thing I could think of is changing the number of molecules to some mass by changing it to moles than use the molar mass of NO2 to get mass

I would appreciate any help on this. Thanks.