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Calculate the red part given the data

Calculate the red part given the data

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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Calculate the red part given the data

Enter the heat capacity of the calorimeter in J/°C that will be used for parts 3 and 4b. (Enter your answer to three significant figures.) 40 1.63e2 J/°C
Transcribed Image Text:Enter the heat capacity of the calorimeter in J/°C that will be used for parts 3 and 4b. (Enter your answer to three significant figures.) 40 1.63e2 J/°C
O Part 4. Heat of a Chemical Reaction Magnesium Ribbon Record all masses to the 0.01 g, except for the mass of Mg and the mass of Mgo used. These should be recorded to the 0.0001 g. Table 7 Mass (g) Calorimeter 40) 19.87 Calorimeter & Water & Acid 49 92.80 Water & Acid 49 72.93 Magnesium Ribbon 40) 0.1063 Enter the following temperatures to the nearest 0.1°C. Table 8 Temperature (°C) Calorimeter & Acidic Water 40 19.5 Maximum Temperature Reached 49 25.2 Magnesium Oxide Table 9 Mass (g) Calorimeter 40) 19.87 Calorimeter & Water & Acid 40 92.80 Water & Acid 40) 72.93 Magnesium Oxide 4.0 0.3004 Table 10 Temperature (°C) Calorimeter & Acidic Water 40 19.0 Maximum Temperature Reached 4 26.0 Results Record your results in Table 11. (Enter your answers to three significant figures.) Table 11: Heats of Chemical Reactions AH in kJ/mol Lit. values in kJ/mol % error Reaction AHa, Mg + 2 HCI → MgCl2 + H2 49 -462 4.0 AHb, Mgo + 2 HCI → MgCI2 + H20 4 -146 4.0 AHC, H2 + 1/2 02 - H20(1) AHd, Mg + 1/2 02 → Mgo -286 4.0 -602 4.0
Transcribed Image Text:O Part 4. Heat of a Chemical Reaction Magnesium Ribbon Record all masses to the 0.01 g, except for the mass of Mg and the mass of Mgo used. These should be recorded to the 0.0001 g. Table 7 Mass (g) Calorimeter 40) 19.87 Calorimeter & Water & Acid 49 92.80 Water & Acid 49 72.93 Magnesium Ribbon 40) 0.1063 Enter the following temperatures to the nearest 0.1°C. Table 8 Temperature (°C) Calorimeter & Acidic Water 40 19.5 Maximum Temperature Reached 49 25.2 Magnesium Oxide Table 9 Mass (g) Calorimeter 40) 19.87 Calorimeter & Water & Acid 40 92.80 Water & Acid 40) 72.93 Magnesium Oxide 4.0 0.3004 Table 10 Temperature (°C) Calorimeter & Acidic Water 40 19.0 Maximum Temperature Reached 4 26.0 Results Record your results in Table 11. (Enter your answers to three significant figures.) Table 11: Heats of Chemical Reactions AH in kJ/mol Lit. values in kJ/mol % error Reaction AHa, Mg + 2 HCI → MgCl2 + H2 49 -462 4.0 AHb, Mgo + 2 HCI → MgCI2 + H20 4 -146 4.0 AHC, H2 + 1/2 02 - H20(1) AHd, Mg + 1/2 02 → Mgo -286 4.0 -602 4.0
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