Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. What mass of carbon dioxide is present in 1.00 m of dry air at a temperature of 25 C and a pressure of 687 Torr? Express your answer with the appropriate units. View Available Hint(s) Component Mole fraction Molar mass (g mol-1) 28.013 31.998 DO ? Value Units Nitrogen 0.780 84 Oxygen 0.209 48 Argon 0.009 34 Carbon dioxide 0.000 375 Neon 0.000 018 18 Helium 0.000 005 24 Methane 0.000 002 Krypton 0.000 001 14 Hydrogen 0.000 000 5 Nitrous oxide 0.000 000 5 39.948 44.0099 20.183 4.003 16.043 Submit 83.80 Part B 2.0159 44.0128 Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. View Available Hint(s) M ? Value Units