Air is approximately 80% nitrogen and 20% oxygen (on a mole basis). Six grams of H₂ (2.01588 amu) gas is added to 22.4-L flask maintained at 0°C and initially filled with air at 1 atm pressure, what will be the molecular weight (i.e., the average molecular weight), in g/mol, of the hydrogen-air mixture? N₂: 28.01340 amu O2: 31.99880 amu

For the reaction 2 NH3(g) ⇋ N2(g) + 3H2(g), Kc= 0.395 at 350 degrees Celsius. A sample of NH3 of mass 25.6 g is laced in a reaction vessel of volume 5.00 L and heated to 350 degrees Celsius. What are the equilibrium concentrations of NH3, N2, and H2?

While ethanol (CH₂CH₂OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene (CH₂CH₂) with water vapor at elevated temperatures. A chemical engineer studying this reaction fills a 75 L tank with 17. mol of ethylene gas and 13. mol of water vapor. When the mixture has come to equilibrium he determines that it contains 7.9 mol of ethylene gas and 3.9 mol of water vapor. The engineer then adds another 3.3 mol of water, and allows the mixture to come to equilibrium again. Calculate the moles of ethanol after equilibrium is reached the second time. Round your answer to 2 significant digits. mol x10 Ś

A 10.0 g sample of liquid water is closed in a 1515 mL flask and allowed to reach equilibrium with its vapor at 27ºC. >What is the mass of H2O(g) when equilibrium is established? Data: Pv (H2O, 27ºC) = 26.7 torr.

Calculate the reaction quotient, Qr for the following reactions and conditions: 7. 2 SO3(g) 2 SO2(g) + O2(g) 16.5; Pso3 = 0.45 atm; Pso2 = 1.52 atm; : Кр- %3D Po2 = 0.210 atm 8. 2 NO(g) + Cl2(g) → 2 NOCI(g) : Кр- 2.5 x 103; PNo = 0.0032 atm; Pc12 = 0.023 atm; PNOCI = 0.210 atm 9.2 NH3(g) N2(g) + 3H2(g) : Кр- 17.0; PNH3 = 0.13 atm; PN2 = 0.34 atm; |3D PH2 = 1.1 atm %3D 10. Will the system in Question 7 proceed to reactants or products for the conditions given? 11. Will the system in Question 8 proceed to reactants or products for the conditions given? 12. Will the system in Question 9 proceed to reactants or products for the conditions given? 13. For the chemical reaction in Question 7, if it is at equilibrium which direction will it shift if SO2 is added? 14. For the chemical reaction in Question 8, if it is at equilibrium which direction will it shift if NO is removed? 15. For the chemical reaction in Question 9, if it is at equilibrium, which direction will if shift if all the…