Question

6) (3 pts) A sample gas is composed of four components. The gas molecules in the picture below are representative of the overall concentrations in the sample. If the total pressure of the gas mixture is 4.0 atm, what is the partial pressure of gas A? = gas A gas A The partial pressure of (3 pts) Water has a vapor pressure of 0.30 atm at 340 K. What is the density of water vapor (g/L.) under these conditions? Dem 1/333 L. 0,30 atm, Bath mook Laton 2.0448 Gits, 340K LA 8) (3 pts) Consider the reaction of nitrogen diexide and hydrogen gas to form ammonia and oxygen. 2 NO: + 3 H2 - 2 NH3 + 2 ) Determine Altra given the following enthalpy of formation values: NH) = -46 kJ/mol; NO2 = +33 kJ/mol All Ensto products) -2nAH (reactants) A trxn 2NH3g12926) - En A H ( INO26) + 3 Hz (g) 2NH3 + 2q - ZN02 + 3H2(g).

Answer 1

Total No. of gaseous malecule = 10 No. of malecak of gas A = 4. make traction of R = No. of gaseous makcule of a Total No. of molecule u partial c) pressure = Total pressure x make traction of a 4.0 1.6 X 0.4 atm. = I G we use ideal gas law to find density of vapor PV = nRT n = No. of males = m = moss of water Holar moss Mao as watcy. PV = m RT Mizo P = m XRT Muo av f density = massa valimis m o = volumes PX Mmo a PX Muzo R T s į S = Mno X P RT

VANNUNSUNNUNNUSANTANA Muzo = 18 gmlmal R = 0.082 Latmaklmal P = 0.30 atm T - 340 f = 1&glmal x 0.30 atm 0.082 Latm k' mal-'x 3404 S = 0.194 glL. Duran = { suf product - Elf reactant 2 NO2* + 34 - 2NH3(g) + 2O2(g) Allºyxn 2 x ouf ny, + 2x946 02 - 2x ou non. - 3X$44 Sina Auto= ziro Aufn=0 Ahryn - 2 x 41 stmat A4%rxn = 2x ou fona - 2 x 8W NO = 2 x - 46 kalmal - 2X33 -92 - 66 - 458 kalmal