Using the appropriate bond energies, calculate the heat of reaction AH for the following reaction: H 2 H H + 0 = 0 0 You can find a table of bond energies by using the Data button on the ALEKS toolbar. Round your answer to the nearest kJ/mol. Note: For clarity, all lone pairs have been omitted from the molecular structures. kJ mol 20-H X S

Please help me understand why this is the correct answer.  Question 1. If the change in internal energy is measured to be 0, and heat is absorbed by the system, which of the following reactions could be taking place? (Assume a closed container at constant temperature with a constant external pressure). Correct: BaCO3(s) → BaO(s) + CO2(g)Incorrect C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l)Incorrect N2(g) + 2O2(g) → 2NO2(g)Incorrect C(s) + O2(g) → CO2(g)Incorrect None of these reactions could apply. 2) What is the molar mass of an unknown organic liquid based on the data from analysis of the liquid? Vaporization of 230.0 mg of the compound in a 120 mL bulb at 130°C gives a pressure of 440.0 torr. Correct: 110. g/molIncorrect 230. g/molIncorrect none of these answers are correctIncorrect 33.1 g/molIncorrect 1.10×105 g/mol

Question 11 X Incorrect. Isooctane, C3H18, is the basis of the octane rating system for gasoline because it burns smoothly, with minimal engine knocking. Pure isooctane is assigned a value of 100. Octane ratings are assigned to gasoline mixtures based on their ability to prevent knocking relative to isooctane. Estimate the energy released during the combustion of 1.00 mol of pure isooctane. Please note the combustion is exothermic process and the released energy is positive for the surroundings. -285.8 kJ

Using the appropriate bond energies, calculate the heat of reaction AH for the following reaction: H-H + esc You can find a table of bond energies by using the Data button on the ALEKS toolbar. Round your answer to the nearest kJ/mol. Note: For clarity, all lone pairs have been omitted from the molecular structures. kJ mol Explanation CI-CI -> 2H-CI 2 Check #3 3 X S S4 $ 4 % 5 MacBook Pro A 6 & Ⓒ2022 McGraw 7

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Calculating the heat of reaction from bond energies Calculate the heat of reaction AH for the following reaction: 2 H₂(g) + O₂(g) → 2 H₂O(g) You can find a table of bond energies by using the Data button on the ALEKS toolbar. Round your answer to the nearest kJ/mol. kJ mol X 1/5

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