I dont understand how to use hess's law to figure this outHomework Answers
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I dont understand how to use hess's law to figure this out
Given the following data:...
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow...
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow 2 AlCl_3(s) given: 2 Al(s) + 6 HCl(aq) rightarrow 2 AlCl_3(aq) + 3 H_2(g) Delta H = -1049 kJ HCl(g) rightarrow HCl(aq) Delta H = -74.8 kJ H_2(g) + Cl_2(g) rightarrow 2 HCl(g) Delta H = -185 kJ AlCl_3(s) rightarrow AlCl_3(aq) Delta H = -323 kJ
Calculate the for the following reaction using Hess's Law: Fez 03 (s) + 3 CO (g)...
Calculate the for the following reaction using Hess's Law: Fez 03 (s) + 3 CO (g) → 2 Fe (s) + 3 CO2 (g) For each blank place, what action must be taken in order to achieve the answer. (For instance, if you need to reverse the reaction, place reverse or (-). If you need to multiply it by a value, place multiply by (number) or X(number).) In Blank #1, place state "I understand." 2 Fe (s) + .2 kJ...
Need serious help on these 3! Please help! Which of the following should have the largest...
Need serious help on these 3! Please help!
Which of the following should have the largest value of S degree? a) SF_6 (g) at 298K b) H_2O (l) at 298K c) He(g) at 298K d) CH_3OH (l) at 298K Which of these changes in the distribution of the nine particles shows an decrease in entropy? Which of these statements is true for this reaction? FeO(s) + CO(g) rightarrow CO_2(g) + Fe(s) Delta H = -11.0 kJ; Delta S = -17.4...
Learning Goal: To understand how to use Hess's law to find the enthalpy of an overall...
Learning Goal: To understand how to use Hess's law to find the enthalpy of an overall reaction. Correct The change in enthalpy, AH, is the heat absorbed or produced during any reaction at constant pressure. Hess's law states that ? H for an overall reaction is the sum of the values for the individual reactions. For example, if we wanted to know the enthalpy change for the reaction PartB What is the enthalpy for reaction 1 reversed? Express your answer...
Part III. Use of Hess's Law to Determine the Heat of Formation of Magnesium Oxide Write...
Part III. Use of Hess's Law to Determine the Heat of Formation of Magnesium Oxide Write in the average molar heats of reaction for the reaction of magnesium with hydrochloric acid and the reaction of magnesium oxide with hydrochloric acid. Make a Hess's Law calculation in the space provided below, using the heats of reaction of magnesium and magnesium oxide and the heat of formation of water, to calculate the heat of reaction for the reaction Mg(s) + 1/2 O2...
please help, i dont understand and need steps explainsd as well thank you Exercises: 3. Given...
please help, i dont understand and need steps explainsd as well
thank you
Exercises: 3. Given the following two thermochemical equations, determine the AHºrxn,unknown. N2(g) +2 02(g) – 2 NO2(g) AH®rxn= 67 kJ NO(g) + 12 02(g) → NO2(g) AHºrxn=-56 kJ 4N2(g) + 402(g) → NO(g) AHºrxn,unknown= ? 4. Given the following two thermochemical equations, determine the AHrxn,unknown. Fe2O3(s) + 3 CO(g) – 2 Fe(s) + 3 CO2(g) AH°rxn=-26.7 kJ CO(g) + 42 02(g) → CO2(9) AH°rxn=-283.0 kJ 2 Fe(s)...
Learning Goal: To understand how to use Hess's law to find the enthalpy of an overall...
Learning Goal: To understand how to use Hess's law to find the enthalpy of an overall reaction. The change in enthalpy, ΔH, is the heat absorbed or produced during any reaction at constant pressure. Hess's law states that ΔH for an overall reaction is the sum of the ΔH values for the individual reactions. For example, if we wanted to know the enthalpy change for the reaction 3Mn+3O2→3MnO2 we could calculate it using the enthalpy values for the following individual...
Use Hess's law and the following data CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g) AH°...
Use Hess's law and the following data CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g) AH° = -802 kJ mol-1 CH4(8) + CO2(g) —> 2CO(g) + 2 H2(g) AFH° = +247 kJ mol-1 CH4(g) + H2O(g) –> CO(g) + 3H2(g) AFH° = +206 kJ mol-1 to determine A.Hº for the following reaction, an important source of hydrogen gas CH4(8) + +02(8) — CO(g) + 2 H2(8)
Use the standard reaction enthalpies given below to determine Delta H degree _rxn for the following...
Use the standard reaction enthalpies given below to determine Delta H degree _rxn for the following reaction: 2 S(s) + 3 O_2(g) rightarrow 2 SO_3(g) Delta H degree _rxn = ? Given: SO_2(g) rightarrow S(s) + O_2(g) Delta H degree _rxn = +296.8 kJ 2 SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H degree rxn = -197.8 kJ Show all your work!
Use the standard reaction enthalpies given below and Hess's Law to determine AH°rxn for the following...
Use the standard reaction enthalpies given below and Hess's Law to determine AH°rxn for the following reaction: Input answer in kJ rounded to the ones place with the correct sign. X4(g) + 10 Y2(g) →4XY5(s) AHørxn = ? Given: XY5(s) → XY3(g) + Y2(g) AHºrxn=-157 kJ X4(g) + 6 Y2(g) →4 XY3(g) AH°rxn = 1,363 kJ
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow 2 AlCl_3(s) given: 2 Al(s) + 6 HCl(aq) rightarrow 2 AlCl_3(aq) + 3 H_2(g) Delta H = -1049 kJ HCl(g) rightarrow HCl(aq) Delta H = -74.8 kJ H_2(g) + Cl_2(g) rightarrow 2 HCl(g) Delta H = -185 kJ AlCl_3(s) rightarrow AlCl_3(aq) Delta H = -323 kJ
Calculate the for the following reaction using Hess's Law: Fez 03 (s) + 3 CO (g) → 2 Fe (s) + 3 CO2 (g) For each blank place, what action must be taken in order to achieve the answer. (For instance, if you need to reverse the reaction, place reverse or (-). If you need to multiply it by a value, place multiply by (number) or X(number).) In Blank #1, place state "I understand." 2 Fe (s) + .2 kJ...
Need serious help on these 3! Please help!
Which of the following should have the largest value of S degree? a) SF_6 (g) at 298K b) H_2O (l) at 298K c) He(g) at 298K d) CH_3OH (l) at 298K Which of these changes in the distribution of the nine particles shows an decrease in entropy? Which of these statements is true for this reaction? FeO(s) + CO(g) rightarrow CO_2(g) + Fe(s) Delta H = -11.0 kJ; Delta S = -17.4...
Learning Goal: To understand how to use Hess's law to find the enthalpy of an overall reaction. Correct The change in enthalpy, AH, is the heat absorbed or produced during any reaction at constant pressure. Hess's law states that ? H for an overall reaction is the sum of the values for the individual reactions. For example, if we wanted to know the enthalpy change for the reaction PartB What is the enthalpy for reaction 1 reversed? Express your answer...
Part III. Use of Hess's Law to Determine the Heat of Formation of Magnesium Oxide Write in the average molar heats of reaction for the reaction of magnesium with hydrochloric acid and the reaction of magnesium oxide with hydrochloric acid. Make a Hess's Law calculation in the space provided below, using the heats of reaction of magnesium and magnesium oxide and the heat of formation of water, to calculate the heat of reaction for the reaction Mg(s) + 1/2 O2...
please help, i dont understand and need steps explainsd as well
thank you
Exercises: 3. Given the following two thermochemical equations, determine the AHºrxn,unknown. N2(g) +2 02(g) – 2 NO2(g) AH®rxn= 67 kJ NO(g) + 12 02(g) → NO2(g) AHºrxn=-56 kJ 4N2(g) + 402(g) → NO(g) AHºrxn,unknown= ? 4. Given the following two thermochemical equations, determine the AHrxn,unknown. Fe2O3(s) + 3 CO(g) – 2 Fe(s) + 3 CO2(g) AH°rxn=-26.7 kJ CO(g) + 42 02(g) → CO2(9) AH°rxn=-283.0 kJ 2 Fe(s)...
Use Hess's law and the following data CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g) AH° = -802 kJ mol-1 CH4(8) + CO2(g) —> 2CO(g) + 2 H2(g) AFH° = +247 kJ mol-1 CH4(g) + H2O(g) –> CO(g) + 3H2(g) AFH° = +206 kJ mol-1 to determine A.Hº for the following reaction, an important source of hydrogen gas CH4(8) + +02(8) — CO(g) + 2 H2(8)
Use the standard reaction enthalpies given below to determine Delta H degree _rxn for the following reaction: 2 S(s) + 3 O_2(g) rightarrow 2 SO_3(g) Delta H degree _rxn = ? Given: SO_2(g) rightarrow S(s) + O_2(g) Delta H degree _rxn = +296.8 kJ 2 SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H degree rxn = -197.8 kJ Show all your work!
Use the standard reaction enthalpies given below and Hess's Law to determine AH°rxn for the following reaction: Input answer in kJ rounded to the ones place with the correct sign. X4(g) + 10 Y2(g) →4XY5(s) AHørxn = ? Given: XY5(s) → XY3(g) + Y2(g) AHºrxn=-157 kJ X4(g) + 6 Y2(g) →4 XY3(g) AH°rxn = 1,363 kJ
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