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A 1.26g sample of MgO (molar mass = 40.3g/mol) was placed in a coffee cup calorimeter and mixed with 156mL of 1M HCI a 21°C. The temperature of the solution rose to 26.3°C. Find the heat of the reaction qsys and AH°rxn assuming the MgO is the limiting reagent. Heat capacity of water = 4.18J/gK

A 1.26g sample of MgO (molar mass = 40.3g/mol) was placed in a coffee cup calorimeter and mixed with 156mL of 1M HCI a 21°C. The temperature of the solution rose to 26.3°C. Find the heat of the reaction qsys and AH°rxn assuming the MgO is the limiting reagent. Heat capacity of water = 4.18J/gK

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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qsurr = MCAT q = heat produced in Joules (J) m = mass (g) C = heat capacity (J/gK) T = Temperature Tfinal-Tinitial(K) 1) A 1.26g sample of MgO (molar mass = 40.3g/mol) was placed in a coffee cup calorimeter and mixed with 156mL of 1M HCI a 21°C. The temperature of the solution rose to 26.3°C. Find the heat of the reaction qsys and AH°rxn assuming the MgO is the limiting reagent. Heat capacity of water = 4.18J/gK MgO(s) + 2HCl(aq) → MgCl2(aq) + H₂O (1) 300 1.26 156 21 26.3 uyira 15.30 156X 40.3 TISK OR CCCC 33, 320.04 1.267. 40.305.3 4.18 269,1234
Transcribed Image Text:qsurr = MCAT q = heat produced in Joules (J) m = mass (g) C = heat capacity (J/gK) T = Temperature Tfinal-Tinitial(K) 1) A 1.26g sample of MgO (molar mass = 40.3g/mol) was placed in a coffee cup calorimeter and mixed with 156mL of 1M HCI a 21°C. The temperature of the solution rose to 26.3°C. Find the heat of the reaction qsys and AH°rxn assuming the MgO is the limiting reagent. Heat capacity of water = 4.18J/gK MgO(s) + 2HCl(aq) → MgCl2(aq) + H₂O (1) 300 1.26 156 21 26.3 uyira 15.30 156X 40.3 TISK OR CCCC 33, 320.04 1.267. 40.305.3 4.18 269,1234
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