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QUESTION 18 A compound has an elemental analysis of 49.4% K, 20.3% S, and 30.3% O by mass. What is the empirical formula? OA. K2SO4 OB.K2S02 OCK2$203 OD. KS204 OE. K2SO3 QUESTION 19 ich of the following reactions will produce a precipitale (only the reactants are shown)? Selec NO3(aq) →

QUESTION 18 A compound has an elemental analysis of 49.4% K, 20.3% S, and 30.3% O by mass. What is the empirical formula? OA. K2SO4 OB.K2S02 OCK2$203 OD. KS204 OE. K2SO3 QUESTION 19 ich of the following reactions will produce a precipitale (only the reactants are shown)? Selec NO3(aq) →

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Certainly! Here is a transcription of the content from the image: --- ### Question 18 A compound has an elemental analysis of 49.4% K, 20.3% S, and 30.3% O by mass. What is the empirical formula? - A. K₂SO₄ - B. K₂SO₂ - C. K₂S₂O₃ - D. K₂SO₄ - E. K₂SO₃ ### Question 19 Which of the following reactions will produce a precipitate (only the reactants are shown)? Select all that apply. - NaCl (aq) + KNO₃ (aq) → - NaCl (aq) + AgNO₃ (aq) → - Ca(ClO₄)₂ (aq) + Pb(NO₃)₂ (aq) → - NH₄I (aq) + NaCl (aq) → - K₃PO₄ (aq) + NaCl (aq) → --- These questions are likely part of an assessment or practice exercise in a chemistry course, focusing on empirical formula determination and solubility rules to predict precipitate formation.
Transcribed Image Text:Certainly! Here is a transcription of the content from the image: --- ### Question 18 A compound has an elemental analysis of 49.4% K, 20.3% S, and 30.3% O by mass. What is the empirical formula? - A. K₂SO₄ - B. K₂SO₂ - C. K₂S₂O₃ - D. K₂SO₄ - E. K₂SO₃ ### Question 19 Which of the following reactions will produce a precipitate (only the reactants are shown)? Select all that apply. - NaCl (aq) + KNO₃ (aq) → - NaCl (aq) + AgNO₃ (aq) → - Ca(ClO₄)₂ (aq) + Pb(NO₃)₂ (aq) → - NH₄I (aq) + NaCl (aq) → - K₃PO₄ (aq) + NaCl (aq) → --- These questions are likely part of an assessment or practice exercise in a chemistry course, focusing on empirical formula determination and solubility rules to predict precipitate formation.
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