5. Calculate the enthalpy of the following reaction: 2Mg + 02 → 2MgO Given: Mg + 2HCI → MgCl2 + H2 AH = -21.0 kJ MgO + 2HCI →→ MgCl2 + H₂O AH = -33.5 kJ H₂+1 O₂ → H₂O AH = -76.0 kJ Unit 2 Assessment

5. Calculate the enthalpy of the following reaction: 2Mg + 02 → 2MgO Given: Mg + 2HCI → MgCl2 + H2 AH = -21.0 kJ MgO + 2HCI →→ MgCl2 + H₂O AH = -33.5 kJ H₂+1 O₂ → H₂O AH = -76.0 kJ Unit 2 Assessment

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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Question

5.
Calculate the enthalpy of the following reaction:
2Mg + 02 → 2MgO
Given:
Mg + 2HCI → MgCl2 + H2
AH = -21.0 kJ
MgO + 2HCI →→ MgCl2 + H₂O
AH = -33.5 kJ
H₂+1 O₂ → H₂O
AH = -76.0 kJ
Unit 2 Assessment

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