Ca(OH)2(s) + H₂O(1) Ca2+ (aq) + 2OH(aq) (exothermic) Ca(OH)2 heat 20H □ Ca2+ H₂0 none QUESTION 23 According to the equilibrium reaction below, which of these will decrease when the temperature is lowered? Check all that apply. 2SO3(g)2SO2(g) + O2(g) (endothermic) S02 02 I none SO3 heat hen the temperature is lowered? Check all that apply. QUESTION 24 According to the equation below, which of these will increase if Helium gas (He) is added to the reaction? 4Fe(s) + 302(g) →→2Fe2O3(g) (exothermic) heat Fe Fe203 none 02

Ca(OH)2(s) + H₂O(1) Ca2+ (aq) + 2OH(aq) (exothermic) Ca(OH)2 heat 20H □ Ca2+ H₂0 none QUESTION 23 According to the equilibrium reaction below, which of these will decrease when the temperature is lowered? Check all that apply. 2SO3(g)2SO2(g) + O2(g) (endothermic) S02 02 I none SO3 heat hen the temperature is lowered? Check all that apply. QUESTION 24 According to the equation below, which of these will increase if Helium gas (He) is added to the reaction? 4Fe(s) + 302(g) →→2Fe2O3(g) (exothermic) heat Fe Fe203 none 02

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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Fill in the blanks with appropriate words a) ........................................................have low shrinkage, a transparent appearance, a broad meltingpoint, and poor wear resistanceb) The most of ........................... exhibit an amorphous structure. However, these materials areconverted to crystalline phases at high temperatures. The name of this process is........................c) ................................................... contain the same numbers of free bonding electrons, and “holes”created from the migration of electrons from the valence to ..............................................
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