Certainly! Here is a transcription of the content from the image:---### Question 18A 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 19Which 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.

Answered: Image /qna-images/answer/5d6c0777-d377-4342-96fd-5341c3b3faff.jpg

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

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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