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1. Explain the term empirical formula and a molecular formula and state how they two differ.

1. Explain the term empirical formula and a molecular formula and state how they two differ.

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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### Chemistry Questions 1. **Explain** the term empirical formula and a molecular formula and state how they differ. 2. **Write** the empirical formulas of the following: - (a) \( \text{H}_2\text{O}_2 = \) - (b) \( \text{C}_6\text{H}_6 = \) - (c) \( \text{C}_6\text{H}_{12}\text{O}_6 = \) - (d) \( \text{H}_2\text{O} = \) - (e) \( \text{MgO} = \) 3. **Calculate** the formula mass: - (a) \( \text{NaCl} = \) - (b) \( \text{KOH} = \) 4. **What** is the percentage of Ag in \( \text{AgNO}_3 \)? 5. **What** is the percentage of C in \( \text{C}_{12}\text{H}_{22}\text{O}_{11} \) (Sucrose, Cane Sugar)? 6. **Determine** in grams the mass of 2.5 moles of NaOH. 7. **How many** moles in 0.5 g of Mg; and 0.2 g of O? 8. **Determine** the number of atoms in 0.8 g of Cu. 9. A substance was found by analysis to contain 45.57% of Sn and 54.43% of Cl. What is the empirical formula of the substance? 10. Ethylene Glycol has a molecular formula of \( \text{C}_2\text{H}_6\text{O}_2 \). - (a) Determine its molar mass. - (b) The percentage compositions of its component’s elements. - (c) The empirical formula of Ethylene Glycol.
Transcribed Image Text:### Chemistry Questions 1. **Explain** the term empirical formula and a molecular formula and state how they differ. 2. **Write** the empirical formulas of the following: - (a) \( \text{H}_2\text{O}_2 = \) - (b) \( \text{C}_6\text{H}_6 = \) - (c) \( \text{C}_6\text{H}_{12}\text{O}_6 = \) - (d) \( \text{H}_2\text{O} = \) - (e) \( \text{MgO} = \) 3. **Calculate** the formula mass: - (a) \( \text{NaCl} = \) - (b) \( \text{KOH} = \) 4. **What** is the percentage of Ag in \( \text{AgNO}_3 \)? 5. **What** is the percentage of C in \( \text{C}_{12}\text{H}_{22}\text{O}_{11} \) (Sucrose, Cane Sugar)? 6. **Determine** in grams the mass of 2.5 moles of NaOH. 7. **How many** moles in 0.5 g of Mg; and 0.2 g of O? 8. **Determine** the number of atoms in 0.8 g of Cu. 9. A substance was found by analysis to contain 45.57% of Sn and 54.43% of Cl. What is the empirical formula of the substance? 10. Ethylene Glycol has a molecular formula of \( \text{C}_2\text{H}_6\text{O}_2 \). - (a) Determine its molar mass. - (b) The percentage compositions of its component’s elements. - (c) The empirical formula of Ethylene Glycol.
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