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15. Determine: a. The number of moles of hydrogen atoms in 5.32 x 1020 molecules of CH4 b. The number of total atoms in 45.2 g of calcium chloride 16. An unknown compound was found to have a percent composition as follows: 47.0% potassium, 14.5 % carbon, and 38.5 % oxygen. a. What is its empirical formula? b. If the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?

15. Determine: a. The number of moles of hydrogen atoms in 5.32 x 1020 molecules of CH4 b. The number of total atoms in 45.2 g of calcium chloride 16. An unknown compound was found to have a percent composition as follows: 47.0% potassium, 14.5 % carbon, and 38.5 % oxygen. a. What is its empirical formula? b. If the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?

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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Answer all parts of each question both 15 and 16 both part a) and b).

15. Determine: a. The number of moles of hydrogen atoms in 5.32 x 1020 molecules of CH4 b. The number of total atoms in 45.2 g of calcium chloride 16. An unknown compound was found to have a percent composition as follows: 47.0% potassium, 14.5 % carbon, and 38.5 % oxygen. a. What is its empirical formula? b. If the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?
Transcribed Image Text:15. Determine: a. The number of moles of hydrogen atoms in 5.32 x 1020 molecules of CH4 b. The number of total atoms in 45.2 g of calcium chloride 16. An unknown compound was found to have a percent composition as follows: 47.0% potassium, 14.5 % carbon, and 38.5 % oxygen. a. What is its empirical formula? b. If the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?
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