Methanogenic bacteria convert acetic acid (CH3COOH) to CO2(g) and CH4(g).   ΔH°f, (kJ/mol) ΔG°f, (kJ/mol) CH3COOH -484.5 -389.9 CO2(g)  -393.5    -394.4 CH4(g)  -74.8  -50.8 Calculate ΔH°rxn. ΔH°rxn = ____ kJ Calculate ΔG°rxn. ΔG°rxn = ___kJ

Calculate the ΔH for the target reaction below using the three equations listed. Rewrite the three equations so  that they add to give the reaction below   Target:            CS2(l) + 3O2(g) -->  CO2(g) + 2SO2(g)         ΔH = ?   C(s) + O2(g) --> CO2(g)                                  ΔH = -393.5 kJ S(s) + O2(g) --> SO2(g)                                   ΔH = -296.8 kJ C(s) + 2S(s) --> CS2(l)                                     ΔH = 87.9 kJ Enter ΔH  for the top equation in Kj. (Your answer should have one digit after the decimal)

for the reaction 2 Hg (l) + O2 (g) →2 HgO (s), ∆H = - 43 kcal/mol Does entropy increase or decrease in this process? Explain.

Answer the following questions about the fermentation of glucose (C6H12O6, molar mass 180.2 g/mol) to ethanol (C2H6O) and CO2. C6H12O6(s) → 2 C2H6O(l) + 2 CO2(g) ΔH = −16 kcal/mol glucose ethanol How many kilocalories of energy are released when 6.9 mol of ethanol is formed? kcal of energy released Report answer to appropriate number of significant figures.

QUESTION 1 Consider the formation of a dimeric protein below. 2P → P2 AH° = 17.0 kJ/mol and AS° = 65.0 J/Kmol This reaction is spontaneous at body temperature (37 °C). Calculate the temperature (in units of °C) below which it becomes nonspontaneous. Enter a numeric answer with the correct sign and no units.

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Why was this wrong and how do I get the right answer?

Consider the following reaction. We say that this reaction is ____ and that the sign of ∆H is _____.   C3H8 + 5 O2 → 3 CO2 + 4 H2O + 488 kcal

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

ΔH° f (kJ/mol) SO 2Cl 2( g) + 2 H 2O( l) → 2 HCl( g) + H 2SO4( l) ΔH° rxn = ? SO 2Cl 2( g) -364H 2O( l) -286HCl( g) -192H 2SO 4( l) +314