Problem 19.70 Methanol (CH3OH) can be made by the controlled oxidation of methane: CH4 (8) + O₂(g) → CH₂OH(g) Part A Calculate AH® for this reaction. Use the following data: AH (CH₂OH(g)) Express your answer in kilojoules one decimal place. LIVE ΑΣΦ A AH° = Submit Part B AS" = Submit Request Answer Part C Calculate AS® for this reaction. Use the following data: Sp(CH₂OH(g)) = 237.6 J/(mol-K). Sp (CH4(g)) 186.3 J/(mol-K). S(O₂(g)) 205.15 J/(mol K). Express your answer in joules per kelvin to one decimal place. IVD ΑΣΦΑ Request Answer ? A & O increases O decreases Ostays the same kJ ? J/K Will AG for the reaction increase, decrease, or stay unchanged with increasing temperature? 40 of 41 Review | Constants | Periodic Table 201.2 kJ/mol. AH (CH.(g)) 74.6 kJ/mol. AH (O₂(g)) 0 kJ/mol. >

Answer the attached photo.

A student dissolves 10.3g of ammonium nitrate NH4NO3 in 300.g of water in a well-insulated open cup. He then observes the temperature of the water fall from 22.0°C to 19.3°C over the course of 3.1 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4NO3s -> NH+4aq + NO−3aq You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔHrxn per mole of NH4NO3.

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Calculate H0rxn for each of the following using data from Appendix B. (a) 2 H2S(g) + 3 O2(g) 2 SO2(g) + 2 H2O(g) (b) C2H6(g) + O2(g) CO2(g) + H2O(g) [unbalanced](kJ)

D= Delta symbol   Using Hess’s law (the indirect method) show how you can combine the following chemical reactions to determine the DHrxn for the following reaction.   Zn (s)  +  1/8 S8  (s) +  2 O2 (g) -->  ZnSO4 (s)                  Goal: Determine DHrxn? Using the reactions below   Zn (s)  +  1/8 S8  (s)  -->  ZnS (s)                                                     DHrxn=A 2 ZnS (s) + 3 O2 (g) -->  2 ZnO (s)  + 2 SO2 (g)                             DHrxn=B 2 SO2 (g) + O2 (g)  -->  2 SO3 (g)                                                  DHrxn=C ZnSO4 -->   ZnO (s)  +  SO3 (g)                                                   DHrxn=D