Use the conversion factor 1 L = 1 dm3 and the atomic mass of Pb as 207.20 g/mol
The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA considers safe for lead air pollution is 1.5 g/m3.
If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.60 L .)
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