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Ex: 12 The complete combustion of an organic compound of mass produces carbon dioxide gas and water. The two products are changed to vapor and passed through two flasks. The first flask contains concentrated sulfuric acid which increases by 2.7g. The second flask contains potassium hydroxide solution which increases by 8.8g. Another sample of this compound of mass 1.57g was heated with molten sodium. The mixture is filtered and treated with silver nitrate solution AgNO3, a white precipitate of mass 2.87g is obtained. 7.85g 1) Explain each increase in mass in the two flasks. 2) Infer what can be deduced about the composition of this compound. 3) Determine the mass percent composition of this compound. 4) Determine the empirical formula of the above compound. 5) Determine the molecular formula of (A) if 0.2 moles of (A) weighs 31.4g Given: C= 12 H= 1 O = 16 I= 127 Ag = 108 g/mol %3D %3D Cl = 35.5 Br = 80

Ex: 12 The complete combustion of an organic compound of mass produces carbon dioxide gas and water. The two products are changed to vapor and passed through two flasks. The first flask contains concentrated sulfuric acid which increases by 2.7g. The second flask contains potassium hydroxide solution which increases by 8.8g. Another sample of this compound of mass 1.57g was heated with molten sodium. The mixture is filtered and treated with silver nitrate solution AgNO3, a white precipitate of mass 2.87g is obtained. 7.85g 1) Explain each increase in mass in the two flasks. 2) Infer what can be deduced about the composition of this compound. 3) Determine the mass percent composition of this compound. 4) Determine the empirical formula of the above compound. 5) Determine the molecular formula of (A) if 0.2 moles of (A) weighs 31.4g Given: C= 12 H= 1 O = 16 I= 127 Ag = 108 g/mol %3D %3D Cl = 35.5 Br = 80

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Given: C 12 Ex: 12 The complete combustion of an organic compound of mass 7.85g produces carbon dioxide gas and water. The two products are changed to vapor and passed through two flasks. The first flask contains concentrated sulfuric acid which increases by 2.7g. The second flask contains potassium hydroxide solution which increases by 8.8g. Another sample of this compound of mass 1.57g was heated with molten sodium. The mixture is filtered and treated with silver nitrate solution AgN03, a white precipitate of mass 2.87g is obtained. 1) Explain each increase in mass in the two flasks. 2) Infer what can be deduced about the composition of this compound. 3) Determine the mass percent composition of this compound. 4) Determine the empirical formula of the above compound. 5) Determine the molecular formula of (A) if 0.2 moles of (A) weighs 31.4g Given: C = 12 O = 16 I= 127 H= 1 Ag = 108 g/mol %3D Cl = 35.5 Br = 80 ||
Transcribed Image Text:Given: C 12 Ex: 12 The complete combustion of an organic compound of mass 7.85g produces carbon dioxide gas and water. The two products are changed to vapor and passed through two flasks. The first flask contains concentrated sulfuric acid which increases by 2.7g. The second flask contains potassium hydroxide solution which increases by 8.8g. Another sample of this compound of mass 1.57g was heated with molten sodium. The mixture is filtered and treated with silver nitrate solution AgN03, a white precipitate of mass 2.87g is obtained. 1) Explain each increase in mass in the two flasks. 2) Infer what can be deduced about the composition of this compound. 3) Determine the mass percent composition of this compound. 4) Determine the empirical formula of the above compound. 5) Determine the molecular formula of (A) if 0.2 moles of (A) weighs 31.4g Given: C = 12 O = 16 I= 127 H= 1 Ag = 108 g/mol %3D Cl = 35.5 Br = 80 ||
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