6.37. Diatomic Elements The stable forms of hydrogen and oxygen at room temperature and pressure are gas phase, diatomic molecules H₂ and O₂. What is the sign of AH for books show do 6.30 a. A solid with metallic properties is formed when hydrogen gas is compressed under extremely high pressures: A in H₂(g) → H₂(s) b. High-energy light shines on oxygen gas in the upper reaches of the atmosphere, converting oxygen gas to oxygen atoms: O₂(g) →20(g)

6.37. Diatomic Elements The stable forms of hydrogen and oxygen at room temperature and pressure are gas phase, diatomic molecules H₂ and O₂. What is the sign of AH for books show do 6.30 a. A solid with metallic properties is formed when hydrogen gas is compressed under extremely high pressures: A in H₂(g) → H₂(s) b. High-energy light shines on oxygen gas in the upper reaches of the atmosphere, converting oxygen gas to oxygen atoms: O₂(g) →20(g)

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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6.56 The standard enthalpy change for the following reaction is 436.4 kJ/mol: H₂(g) → H(g) + H(g) Calculate the standard enthalpy of formation of atomic hydrogen (H).
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hello, i need help with part a, b, and c. In the chemistry lab, one often has to work with very reactive metals such as sodium and lithium. Unfortunately, these same metals can react vigorously with water or oxygen and cause fires. Given the following information: (kJ/mol) (kJ/mol) Li2O(s) -597.9 Li+(aq) -278.5 Na2O(s) -416 Na+(aq) -240 K2O(s) -361 K+(aq) -251 CO(g) -110.5 CO2(g) -393.5 H2O(l) -286 OH-(aq) -230 CCl4(l) -135 SiO2(s) -911 LiCl(s) -409 NaCl(s) -411 KCl(s) -436 Cl-(aq) -167 Calculate ΔH° for the following reactions: 1a) 4 Li(s) + O2(g) --> 2 Li2O(s) 1b) 2Li(s) + CO2(g) ----> Li2O(s) + CO(g) 1c) 2Li(s) + 2H2O(l) ---> 2LiOH(aq) + H2(g)
A) 425.66J/2.0360 g. Convert to kj/mol. Show the work. Molar mass = 39.99 NaOH B) 425.32J/ 1.9532g. Convert to kj/mol. Molar mass = 80.043 Na4NO3