Problem: The density of air at sea level and 98 °F is about 1.20 g/L. The volume of the adult human lungs in the expanded state is about 6.0 L. Given that air is 20% oxygen by mass, compute the number of grams of oxygen in your lungs.

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The density of air at sea level and 98 °F is about 1.20 g/L. The volume of the adult human lungs in the expanded state is about 6.0 L. Given that air is 20% oxygen by mass, compute the number of grams of oxygen in your lungs.