Question

Mass of stoppered flask + air + tape (record all digits from balance) ISLcBS 22 C 151.70es 22 Air temperature 151.Blo4 S1.8744 Mass of stoppered flask and CO2 (gas) + tape 23 °C °C Temperature of CO: (gas) torr Barometric pressure 204 49 mL Volume of water in flask (= Vgas) g/mL Density of air (from CRC Handbook) Mass of air in flask Calculating ngas Mass of EMPTY stoppered flask + tape Mass of CO2 in flask K K Temperature of CO2 gas Pressure of CO2 torr Number of moles of CO2 in flask mol mol (from PV=nRT Calculating molar mass Experimental molar mass of CO2 g/mol g/mol Average molar mass of CO2 g/mol Theoretical molar mass 440/ of CO2 g/mol (calculate from atomic masses) % difference in experimental molar mass 6ICHMISILL: MOLAR MASS OF A GAS Show the detailed calculation setups here. Mass of air in flask Mass of EMPTY stoppered flask + tape: Mass of CO2 in flask: Number of moles of CO2 in flask (from PV=nRT): Experimental molar mass of CO: % error in experimental molar mass: REV2019-051s

Answer 1

data Given ofteffared ak nars tofe GOt TST The votume the toffaned ak 261 ain Sounce 0. 00128 oifein) dlank So, the man air Sthe -Co.0011 24) 3 4 0.33% oun This air the loath may Aovme different But canes the maM the two in CaMes Cone - Aape ot Attered lak +cot mas 51. 86 47 of tofared dlak tofe slhe man Here, D.338 T085 the 151,37 058 jom the mmass ourr CO here So, the mas 1. 36 47 15). 3-105 0.4912

temfenatuore co = 23 'c The 296 k toror Prerswre of CO 730 O. 96 ochm Tdeod Gan formala will the Hene pV mRT forersvore of where P the vume the meles ot oncoat an tom ferodure of Hane atm 0.96 P = 0.244 L V 264 nd 0. 0 8 21 L. atm 6 T296 k Now PV nRT 0. 9 x 0. 264 nx0.0821 29 17 n 0.0104 m omeunt ot C0 So ak in the the 0. o104 enperimint volue fmed a 0.4942 The al 17.39 m

theoritieal nalue fmalan The in 41 metar max So. the . difference in *oe) 47.39-44 44 Care TT dilfe The man ent Hane. The erer ttfred dak andl 0 ain, maM Mith Aame he -. Ccane otfeed dlak+ ca+tfe The mas J51. 81 44 t tfened lak lafe The mars 51. 3705 4 So, the mas hene 8741-151.3105 0.5039 7 The CO, An 23 c 296 k Preswre of Co2 7 30 tou E 0.96 atm

have ta apphy deal an las hene We he mRT PN P f3e adm 0.96 & 0. 264 L volume L.otm k.mol R 0.0 92 T29 K Se 0.96 x0. 264 0, 0821 29 +- n0.0104 efertmenho malos ot COL the nas 0.50 39 0.0104 4 8.45 theori tical molar Bnt of co2 the mas 11.0 So, the difference eHSIG in malar mas 4 8.45-44.0 44 10. 1