bo Consider these reactions, where M represents a generic metal. O Macmillan Learning 1. 2. 3. 2 M(s) + 6 HCl(aq) 2 MC13 (aq) + 3H2(g) HCl(g) HCl(aq) H2(g) + Cl2(g) 2 HCl(g) AH₁ =-817.0 kJ AH2=-74.8 kJ 4. MC13 (s) → MC13 (aq) AH3=-1845.0 kJ AH4=-211.0 kJ Use the given information to determine the enthalpy of the reaction 2M(s) + 3 Cl2(g) → 2 MC13 (s) AH= -6079.6 Incorrect Answer

bo Consider these reactions, where M represents a generic metal. O Macmillan Learning 1. 2. 3. 2 M(s) + 6 HCl(aq) 2 MC13 (aq) + 3H2(g) HCl(g) HCl(aq) H2(g) + Cl2(g) 2 HCl(g) AH₁ =-817.0 kJ AH2=-74.8 kJ 4. MC13 (s) → MC13 (aq) AH3=-1845.0 kJ AH4=-211.0 kJ Use the given information to determine the enthalpy of the reaction 2M(s) + 3 Cl2(g) → 2 MC13 (s) AH= -6079.6 Incorrect Answer

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter8: Thermochemistry

Section: Chapter Questions

Problem 65QAP: Natural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU....

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Natural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU. (a) How many joules are in one therm? (1J=9.48104BTU) (b) When propane gas, C3H8, is burned in oxygen, CO2 and steam are produced. How many therms of energy are given off by 1.00 mol of propane gas?
A 45-g aluminum spoon (specific heat 0.88 J/g C) at 24 C is placed in 180 mL (180 g) of coffee at 85 C and the temperature of the two become equal. (a) What is the final temperature when the two become equal? Assume that coffee has the same specific heat as water. (b) The first time a student solved this problem she got an answer of 88 C. Explain why this is clearly an incorrect answer.
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You have two samples of different metals, metal A and metal B, each having the same mass. You heat both metals to 95C and then place each one into separate beakers containing the same quantity of water at 25C. a You measure the temperatures of the water in the two beakers when each metal has cooled by 10C and find that the temperature of the water with metal A is higher than the temperature of the water with metal B. Which metal has the greater specific heat? Explain. b After waiting a period of time, the temperature of the water in each beaker rises to a maximum value. In which beaker does the water temperature rise to the higher value, the one with metal A or the one with metal B? Explain.
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