Problem: Part A:What mass of carbon dioxide is present in 1.00 m3 of dry air at a temperature of 19°C and a pressure of 651torr? Express your answer with the appropriate units.Part B: Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units.Here is given info: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.  Component  Mole fraction   Molar mass  (g/mol)Nitrogen   0.78084  28.013Oxygen 0.20948  31.998Argon 0.00934  39.948Carbon dioxide    0.000375  44.0099Neon 0.00001818  20.183Helium 0.00000524  4.003Methane 0.000002  16.043Krypton 0.00000114  83.80Hydrogen 0.0000005  2.0159Nitrous oxide 0.0000005   44.0128

FREE Expert Solution

Part A: Given:

P = 651 torr = 0.8566 atm

V = 1.00 m3 = 1000 L

T = 19 °C + 273 = 292 K


Calculating for n:

n=(0.8566 atm)(1000 L)(0.08206 atm·Lmol·K)(292 K) = 35.75 mol dry air

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Problem Details

Part A:

What mass of carbon dioxide is present in 1.00 m3 of dry air at a temperature of 19°C and a pressure of 651torr? Express your answer with the appropriate units.


Part B: 

Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units.


Here is given info:

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.

  Component  Mole fraction   Molar mass
  (g/mol)
Nitrogen   0.78084  28.013
Oxygen 0.20948  31.998
Argon 0.00934  39.948
Carbon dioxide    0.000375  44.0099
Neon 0.00001818  20.183
Helium 0.00000524  4.003
Methane 0.000002  16.043
Krypton 0.00000114  83.80
Hydrogen 0.0000005  2.0159
Nitrous oxide 0.0000005   44.0128