I am stuck on both of the following problems. I am not getting the same answers that the worksheet says my final answer should be. Please help :( Lesson 6D Practice Problems:Calculate the enthalpy change for the reaction: NO(g) + O(g)-> NOlo) from the data below. Be sure to showall work in the space provided including how all reaction equations cancel. BRIEF ANSWER -304.1 kl.+ O2(g)1.NO(g) + Os(g)->NO *AH =-198.9kJOslg)->1.502(g)AH=-142.3 kjOzlg)->→ 20(g)AH= +495.0 kJThe highly exothermic thermite reaction, in which aluminum reduces iron(II) oxide to elemental iron, hasbeen used by railroad repair crews to weld rails together. BRIEF ANSWER = 95.3 g.2.%3DAH =-850. kJ2Al(s) + Fe203(s) → 2Fe(s) + Al2O3(s)What mass of solid iron (MM = 55.85 g/mol) is formed when 725 kJ of heat are released?-2-

Answered: Calculate the enthalpy change for the…

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

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I am stuck on both of the following problems. I am not getting the same answers that the worksheet says my final answer should be. Please help :(

Lesson 6D Practice Problems:
Calculate the enthalpy change for the reaction: NO(g) + O(g)-> NOlo) from the data below. Be sure to show
all work in the space provided including how all reaction equations cancel. BRIEF ANSWER -304.1 kl.
+ O2(g)
1.
NO(g) + Os(g)
->
NO *
AH =-198.9kJ
Oslg)
->
1.502(g)
AH=-142.3 kj
Ozlg)
->
→ 20(g)
AH= +495.0 kJ
The highly exothermic thermite reaction, in which aluminum reduces iron(II) oxide to elemental iron, has
been used by railroad repair crews to weld rails together. BRIEF ANSWER = 95.3 g.
2.
%3D
AH =-850. kJ
2Al(s) + Fe203(s) → 2Fe(s) + Al2O3(s)
What mass of solid iron (MM = 55.85 g/mol) is formed when 725 kJ of heat are released?
-2-

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