Question

15 Question (1 point) See page 299 A compound containing only C, H, and was extracted from the bark of the sassafras tree. The combustion of 89.5 mg produced 243 mg of CO2 and 49.8 mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. 1st attempt Part 1 (0.5 point) See Periodic Table Note that formulas of organic compounds should first list the carbon and hydrogen with the rest of the atoms listed in alphabetical order. For this problem use the format: C,H,O, where x, y, and z are subscripts of 2 or greater. Empirical Formula:

Answer 1

243 mg of 87.S mg 49.8 mg of 2o Civen Combushon poeduad and amount of informaton we Quanhtate Fom this cand H in the Sample पप १ल०ए motor r 2 Molar 242 mg Co = 0.00SS mol of ५५१ +- cor Imol of co, is Slnce made upof we have one 2 moGs of oif nd moas of co 0.0050 then O.0055Moles or c mass of this c In gsoms S have we

Page: co.0055 moL) 12:0119 of C Molat mass of 12.011g fe helsogen 1 g/mol Molar mass of H2o 49-8 mg of o X .0027 MoL iS made up of { mole of H20 ( mole ofo and 2 molus of H2o the have DOD27 mol af We no of mole s of HO.022=0005s is Sin Ca mass sammola of hy dsegon The amount of hydsogen DO SS mol H x 1a f u I molof H and t- 066 t D 0DSS wight of 0.0215 -1 CHOand ght is consis fs a The Gompounds $1mg lo.089 4) weght of o 0,089- 0.0150.012 9 ofo in moles 0011 mol of D.017 1mol o 16gefo Pro46 mas f o16 9lmo mota

Page: No we have D00SS Mous of c &os5 mols of H D011 ofo mols Divide by fmallest Sma Ue Value to nos maite Cz Satoms HE5atoms I at m D empisical Aos mula 16 g/mal iven molas mass of The lempeund 5(12) + S1)+ 16 el glmol of (5 ts0 mola maSS 162 Jlmel male ulal the 10 get molal mass of lapiical fomula fosmula is 162 2 Fmy the CLo HIOO Su moleales fosmula