Question

- 0 Share Comments B2-08- G h 3 Stoichiometry Compatibility Mode Yasaman Zare Insert Draw Design Layout References Mailings Review ViewHelp Ginger Tell me what you want to do Times - 12 - A A A A 9-3 al e find 21 AaBbc AaBbc AaBbci AaBbce AaBbCD AaBbc AaBbcel. Replace BIUX*' A.A. ES Emphasis 15. 9. Heading 1 1 Normal Strong Subtitle Title No Spac... Painter Select- Font Paragraph Styles Editing G Dictate Ginger Voce Geger Tools 8. A sample is analyzed as containing 24.09 grams of potassium, 0.308 moles of manganese, and 7.42 x 10" atoms of oxygen. What is the empirical formula? 9. A certain compound is known to have a molecular weight slightly under 320 grams. If a sample contains 0.226 moles of aluminum, 8.21 grams of carbon, and 21.6 grams of oxygen, wha' is the molecular formula? 100. 102 E- in nuntainontai. OCA. 102 atafaban 100. 10 tan af A D 9:03 PM ENG 11/8/2019 in Annelefonu English (United States) e to search

Answer 1

mass in gm. 24.09 © moles of Potassicom (K) = Molas Mase 39.) Moles of Oxygen (no) = No. of atoms 80.616 6•023x1023 6.023x1023² ink: rimor: no = 0.616 : 0.308: 1.23% Miros: no = 2:1:4 . Empirical formula = K₂ Mor Oy ☺ Moles of Carbon () = 8,21 -0.684 Moles of Oxygen (0%)- 216 = 1,35 inci MAL ON = 0-684: 0.226 : 1.35 = 3:1:6 empirical formula = C₂ A2 Of. Let formula is, C32A boon then, Molar Mass= 360+970 +960=320 - 1599=320 = = 2. .: Molecular formula = 6 Ala 0,2