Calculate the A Hrxn for the reaction: 2H₂(g) + 2CO(g) → 2H₂O(g) + 2C(s) Given that: H₂O(g) + CO(g) → H₂(g) + CO₂(g) A H₁ = -41.2 kJ A H₂ = -206. KJ 3H₂(g) + CO(g) → H₂O(g) + CH4(g) CO2(g) + CH4(g) 2H₂O(g) + 2C(s) A H3 = -15.5 kJ Express your answer in decimal notation rounded to three signific

Calculate the standard enthalpies of formation of (a) KCIO3(s) with the following information: K(s) + 1/2 Cl₂(g) KCI(s) 2 KCIO3(s)→2 KCl(s) + 3 O₂(g) ArH=-436.75 kJ mol-¹ A,H-89.4 kJ mol-¹ (b) NaHCO3(s) with the following information: Na(s) + 1/2 O₂(g) + 1/2 H₂(g) → NaOH(s) C(s) + O₂(g) → CO₂(g) NaOH(s) + CO₂(g)→→NaHCO3(s) A,H-425.61 kJ mol-¹ ArH=-393.51 kJ mol-¹ A,H= -127.5 kJ mol-¹

What is the standard enthalpy change for the reaction: 2C5H10(1) + 15O2(g) → 10CO2(g) + 10H20(1); where C5H10(1) AH°f = –605.0 kJ/mol; CO2(g) AH°f = -393.5 kJ/mol; H2O(1) AH°F - 285.8 kJ/mol. O a. -5583 kJ O b. -5783 kJ O C. -5383 kJ O d. -5183 kJ e. -4983 kJ

A chemist measures the enthalpy change AH during the following reaction: 4 Fe(s) + 3 02(g)→2 Fe,O3(s) AH =-320. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ x10 Fe(s) + 0,6) - Fe,0,(1) O kJ 2Fe,0; (s) – 4Fe(s) + 30, (3) O kJ 4Fe,0, (s) - 8Fe(s) + 60, (3)

Can you please help me with this question

15. Use the following reactions for which the reaction enthalpies are given to determine the reaction enthalpy of: Given: N₂H40) + 2 H₂O2(1)→ N2(g) + 4H₂O N₂H4(1) + 3 O2(g) → 2 NO2(g) + 2 H₂O(g) H₂O(1) + 1/2O2(g) → H₂O2(1) 1/2 N2(g) + O2(g) → NO₂(g) H₂O → H₂O ΔΗ° = _466 kJ AH°= 98.0 kJ AH° = 34.0 kJ AH° = 44.0 kJ

Find the enthalpy change for this reaction using the data below. Clearly show how you got the answer. 2 Al(s) + 3 Cl2 (g) → 2 AlCl3 (s) Data: (a) 2 Al(s) + 6 HCl(aq) → 2 AlCl3 (aq) + 3 H2 (g)                     H = −1049 kJ (b) AlCl3 (s) → AlCl3 (aq)                                                             H = −323 kJ (c) H2 (g) + Cl2 (g) → 2 HCl(g)                                                    H = −185 kJ (d) HCl(aq) → HCl(g)                                                                     H = +74.8 kJ

Given the standard enthalpy changes for the following two reactions: (1) Sn(s) + Cl½(g)–SnCl½(s) AH° = -325.1 kJ (2) Sn(s) + 2C12(g)– →SNCI4(1) AH° = -511.3 kJ what is the standard enthalpy change for the reaction: (3) SNC1,(s) + Cl2(g)SnCl4(1) AH° = ? kJ

（1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g)     ΔHrxn = +254.3 kJ What will be the enthalpy change (in kJ) if 0.471 mol B reacts in excess A?   （2）Consider the reaction: C (s) + O2 (g) → CO2 (g)     ΔHrxn = -393.5 kJ What mass of carbon (in g) must be reacted via this mechanism to release 581.2 kJ of heat?

Determine the enthalpy change, AH, in kJ, for the following reaction: CS2 (1) + 302 (g) --> CO₂ (g) + 2SO₂ (g) given the following thermochemical equations: C (s) + O₂ (g) --> CO₂ (g) ΔΗ = 90.1 kJ S (s) + O₂ (g) --> SO₂ (g) ΔΗ = -352 kJ C (s) + 2S (g) --> CS₂ (1) ΔΗ = 86.5 kJ Do not report units in your answer. Report your answer to one decimal place and include the correct sign in your answer.