Question

A 2.75 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was combusted in excess oxygen. This produced 1.55 g CO, and 0.951 g H,O. A second sample of this compound with a mass of 6.21 g produced 6.37 g SOZ. A third sample of this compound with a mass of 8.41 g produced 3.39 g HNO3. Determine the empirical formula of the compound. Enter the correct subscripts on the given chemical formula. empirical formula: CHNSO

Answer 1

Sample weight 27 CHNSO) Co o1 2.75 producs Co12t l62 =y 127 121 57 Molar Mano C o Co Comlain o 0427 17 Molar Mans at o 0.951 2 A0 O las 2.75ofSam ple has 2 77 IS. 27 .c 28 32

0 1OS16D 2- Molar Mars a So= ss03 Contain 32 t IG 3 80 327 ts 2 821 2.54077S 2 548 L6 4103 Melor Mars HN = 6 Contain 143 31 0-757N

0-75710D 8 75 1N IS 27 4 2.81 4 03 ч1 S 2 8.95 69 Tolal loD69 mass in lo mok Noo Malu Mass |ऽ। 12jnad чо 12Smole umal mel lmal 1 28 male mole 32 ghno

N male 0-64mal 1. 93 mal mal 11 Now divide each male Valu to Small est Calculsted and Round numbu alus to nearust whal Numbr 1-2 5 9 S 2 у 6. 25 J.28 S2 2 6-6 4 O-64 30/ NO Enpinical formala HS3 Ans