### Percent Composition and Molecular Formula Worksheet**Name:** ____________________________________ **Date:** ____________________________________ **Block:** _______**Tasks:**1. Calculate the percent of nitrogen in urea, NH\(_2\)CONH\(_2\).2. Calculate the percentage of water in zinc sulfate heptahydrate.3. Calculate the percentage of oxygen in potassium chlorate.4. Calculate the percentage of tin in potassium stannate trihydrate, K\(_2\)SnO\(_3\)·2H\(_2\)O.**Write the molecular formulas of the following compounds:**5. A compound with an empirical formula of C\(_2\)OH\(_4\) and a molar mass of 88 grams per mole.6. A compound with an empirical formula of C\(_4\)H\(_4\)O and a molar mass of 136 grams per mole.7. A compound with an empirical formula of C\(_4\)BrFO and a molar mass of 254.7 grams per mole.8. A compound with an empirical formula of C\(_2\)H\(_5\)N and a molar mass of 46 grams per mole.**Answer the following questions:**9. The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. Determine the empirical formula of acetic acid.10. The molar mass for question #9 was determined by experiment to be 60.0 g/mol. What is the molecular formula?11. What’s the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen?12. A 50.51 g sample of a compound made from phosphorus and chlorine is decomposed. Analysis of the products showed that 11.39 g of phosphorus atoms were produced. What is the empirical formula of the compound?13. When 2.5000 g of an oxide of mercury (Hg\(_x\)O\(_y\)) is decomposed into the elements by heating, 2.405 g of mercury are produced. Calculate the empirical formula.14. The compound benzamide has the following percent composition. What is the empirical formula? - C = 69.

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Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

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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