Please answer these questions on your Page 7 (a) We place 88.8 g of a metal at 10.00°C in 444.4 g of water at 70.00°C. The water is in a beaker that is also at 70.00°C. The specific heat capacity of water is 4.184 J K-¹ g¹ and that of the metal is 0.555 J K-¹g-¹. The heat capacity of the beaker is 0.777 kJ K-¹. What is the final temperature of the metal, the water, and the beaker? (b) Calculate the enthalpy change for the reaction C(graphite) + 2 H₂(g) → CH₂(g) with the help of the enthalpy changes of the following reactions: C(graphite) + O₂(g) → CO2(g) AH-393.5 kJmol-1 H₂(g) + O2(g) → H₂O(1) AH-285.8 kJmol-1 CH₁ (g) + 2 O₂(g) → CO₂(g) + 2 H₂O(1) AH-890.4 kJmol-¹ The temperature is 25°C in all instances.

Please answer these questions on your Page 7 (a) We place 88.8 g of a metal at 10.00°C in 444.4 g of water at 70.00°C. The water is in a beaker that is also at 70.00°C. The specific heat capacity of water is 4.184 J K-¹ g¹ and that of the metal is 0.555 J K-¹g-¹. The heat capacity of the beaker is 0.777 kJ K-¹. What is the final temperature of the metal, the water, and the beaker? (b) Calculate the enthalpy change for the reaction C(graphite) + 2 H₂(g) → CH₂(g) with the help of the enthalpy changes of the following reactions: C(graphite) + O₂(g) → CO2(g) AH-393.5 kJmol-1 H₂(g) + O2(g) → H₂O(1) AH-285.8 kJmol-1 CH₁ (g) + 2 O₂(g) → CO₂(g) + 2 H₂O(1) AH-890.4 kJmol-¹ The temperature is 25°C in all instances.

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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