Question

Question 21 (1 point) Gas is contained in a 10.0 L vessel at a temperature of 40.0° C and a pressure of 10.0 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules of gas are in the vessel? O(a) 3.89 mol; (b) 2.34 * 1022 molecules O(a) 3.89 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 5.24 x 1024 molecules (a) 2.19 mol; (b) 2.34 x 1024 molecules

Answer 1

10.13 x 105 x 10x103 Solution we have pressure of gas, Elox 4608x 105 10.13x10 Spa .p = lo atm Temperature of gas, yo'c (40f 273 ) K = 313K and Volume T = of gas - volume of vessel v=lol = 10 x 103 m3 we use PVE ART or ne pv whese ne No of moles g gas R = 8.314 Ilmolok. RT . n= 80314 x 313 n= 3.89 moles

and I mole contain 6:022 x 1023 molecules of gas 3.89 moles contain 23 molecules of gas 3.89 x 6.022 x 10 20 348 1024 molecules - Answer is and option,