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Mass? 9. Which of the following is the best statement of the Law of Conservation of In any non-nuclear change, energy is conserved a. b. In a chemical change, the mass of the reactants is always greater than or equal to the mass of the products In a chemical change, the mass of the products is always greater than or equal to the mass of the reactants C. For endothermic chemical reactions, the mass of the products is greater than the mass of the reactants, and for exothermic chemical reactions, the mass of the products is less than the mass of the reactants d. e. In a chemical change, mass is neither created nor destroyed

Mass? 9. Which of the following is the best statement of the Law of Conservation of In any non-nuclear change, energy is conserved a. b. In a chemical change, the mass of the reactants is always greater than or equal to the mass of the products In a chemical change, the mass of the products is always greater than or equal to the mass of the reactants C. For endothermic chemical reactions, the mass of the products is greater than the mass of the reactants, and for exothermic chemical reactions, the mass of the products is less than the mass of the reactants d. e. In a chemical change, mass is neither created nor destroyed

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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--- **Chemistry Practice Questions** **Name:_______________________________** **ID: A** --- **9. Which of the following is the best statement of the Law of Conservation of Mass?** a. In any non-nuclear change, energy is conserved. b. In a chemical change, the mass of the reactants is always greater than or equal to the mass of the products. c. In a chemical change, the mass of the products is always greater than or equal to the mass of the reactants. d. For endothermic chemical reactions, the mass of the products is greater than the mass of the reactants, and for exothermic chemical reactions, the mass of the products is less than the mass of the reactants. e. In a chemical change, mass is neither created nor destroyed. --- **10. Complete the following operation: 8.36 x 10⁵ + 1.320 x 10⁶** a. 8.492 x 10⁶ b. 8.492 x 10⁷ c. 9.68 x 10⁵ d. 2.156 x 10⁶ e. 2.156 x 10⁷ --- **11. Complete the following operation:** \[ 4.77 \times 10^{-4} \Bigg/ (2.73 \times 10^{-7} \cdot 7.11 \times 10^{-8}) \] a. 4.07 b. 0.246 c. 2.46 x 10⁻⁶ d. 1.24 x 10⁻⁴ e. 1.24 x 10⁻¹⁵ --- **12. Convert 373 liters to milliliters, centiliters, and kiloliters.** a. 0.373 mL, 373,000 cL, 37,300 kL b. 37,300 mL, 0.373 cL, 373,000 kL c. 373,000 mL, 37,300 cL, 0.373 kL d. 0.373 mL, 3.73 cL, 373,000 kL e. 3.73 mL,
Transcribed Image Text:--- **Chemistry Practice Questions** **Name:_______________________________** **ID: A** --- **9. Which of the following is the best statement of the Law of Conservation of Mass?** a. In any non-nuclear change, energy is conserved. b. In a chemical change, the mass of the reactants is always greater than or equal to the mass of the products. c. In a chemical change, the mass of the products is always greater than or equal to the mass of the reactants. d. For endothermic chemical reactions, the mass of the products is greater than the mass of the reactants, and for exothermic chemical reactions, the mass of the products is less than the mass of the reactants. e. In a chemical change, mass is neither created nor destroyed. --- **10. Complete the following operation: 8.36 x 10⁵ + 1.320 x 10⁶** a. 8.492 x 10⁶ b. 8.492 x 10⁷ c. 9.68 x 10⁵ d. 2.156 x 10⁶ e. 2.156 x 10⁷ --- **11. Complete the following operation:** \[ 4.77 \times 10^{-4} \Bigg/ (2.73 \times 10^{-7} \cdot 7.11 \times 10^{-8}) \] a. 4.07 b. 0.246 c. 2.46 x 10⁻⁶ d. 1.24 x 10⁻⁴ e. 1.24 x 10⁻¹⁵ --- **12. Convert 373 liters to milliliters, centiliters, and kiloliters.** a. 0.373 mL, 373,000 cL, 37,300 kL b. 37,300 mL, 0.373 cL, 373,000 kL c. 373,000 mL, 37,300 cL, 0.373 kL d. 0.373 mL, 3.73 cL, 373,000 kL e. 3.73 mL,
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