Question

alculating Partial Pressure ③ 15 or 15 Review Constants Periodic Table Part A calculations. essure of the gas partial pressures of . if you have a gon at 4 atm, then e the cylinder is A mixture of He, Ar, and Xe has a total pressure of 280 atm. The partial pressure of He is 0.250 atm, and the partial pressure of Ar is 0.400 atm What is the partial pressure of Xe? Express your answer to three significant figures and include the appropriate units. sure of a gas of moles to find the ssures to find the View Available Hint(s) 1 of 1 > Bee = Value Units Submit Part B A volume of 18.0 L contains a mixture of 0.250 mole N. 0.250 mole Oy, and an unknown quantity of He. The temperature of the mixture is 0 °C, and the total pressure is 1.00 atm How many grams of helium are present in the gas mixture? Express your answer to three significant figures and include the appropriate units. able Hintis)

Answer 1

Answer Part-A According to palton's law of Parke Pressures Prot = Phe t Par + Pxe 2.80 cm = 0.250 atm + 0.400 atm + Pxe Pre = 2.15 atm Partab V = 18.01 TA (273.15+0) K = 273.15 K Ptot = 1:00 am using ideal gas law Pot V = ntot RT not = story loovtm X18.01 0.082.06 atma? x 273.15 K molis ntot = 0.803 mote Muat not the = 0.803 molt 3 molt .250 ml + 0. 250 ml + 1 = 0.80 3 ro. hue = 0.303 moll mass of He = - moles of He X Molar mass of He 0.303 mol X 4.0026 g/mol = 1.21 g mass of He = 1.21 g