Calculate mass, mole fraction and avg. molecular weight of air

Related BrainMass Solutions

• Weight Percentage of MTBE (methyl tert-butylether) in Gasoline : Oxygen Content

  Let the mole fraction of MTBE in the blend be equal to x Molecular weight of MTBE (C5H12O) = 88 Molecular weight of Gasoline (C8H17) = 113 Average molecular weight of blend = 88 x + 113 (1-x) = 113-25 x Weight of oxygen in one mole of blend =

• Molal Solution/Mass of Water and Mole Fraction

  Calculate the mole fraction of ethyl alcohol C2H5OH in a solution that contains 230 grams of C2H5OH and 312 grams of benzene C6H6? 0.56 How?

• Estimate the density of air

  Molecular weight of O2 = 32(g/mol) Molecular weight of N2 = 28(g/mol) If we assume air as an ideal gas then 1 mole of air will occupy 22.4L.

• Empirical & Molecular Formula

  After rearranging: n = pV/RT = 1 atm x 0.0574 L / 0.08206 L atm mol^-1K^-1 x 273K n = 0.00256 mole From the number of moles and the mass, the molecular weight can be obtained: n = m/M , where M is molecular weight.

• Concentration of Nitric Oxide in Equilibrium with Nitrogen and Oxygen

  The numbers I used: air density = 1.2 gr/Liter Oxygen fraction by weight: 23.2% Nitrogen fraction by weight: 75.5% Take one liter of air and calculate the mass of nitrogen and oxygen in this volume. then, using 28gr/mole and 32 gr/mole as te molar

• Kinetics: various calculations

  Molecular weight is the mass per mole.

• Molarity, Molar Mass, Oxidizing Agents, Mole Fraction and More

  26665 Chemistry: Molarity, Molar Mass, Oxidizing Agents, Mole Fraction and more 7 general chemistry questions. Example: At 20 degrees Celcius, the vapor pressure of toluene is 22 mm Hg and that of benzene is 75 mm Hg.

• What mass of carbon must be burned to increase the average carbon dioxide level in the atmosphere?

  As the average molecular weight of air is 28.96, we can calculate no of moles of air, which is given by (Mass/ Molecular weight) = (5.8 x 1015 )/ 28.96 Ton moles. = 2.003 x 1014 If temperature and pressure are known , we can calculate the volume of

• Titration of Sulfhydryl Groups on an Enzyme

  As the mole ratio increases, the moles of enzyme will decrease and the molecular weight will rise.