• Observe the following reactions carefully: H2(g) + F2(g) 2HF(g) AH = -537 kJ > C(s) + 2 F2(g) CF4(g) AH = -680 kJ 2 C(s) + 2 H2(g) - C2H4(g) AH = +52.3 kJ Calçulate the AH for the reaction of C2H4(g) with F2(g) to make CF4(g) and HF(g)

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The enthalpy (or heat) of combustion of acetone, (CH3)2CO, is - 1657.8 kJ. The reaction is (CH3)2CO (1) +4 0₂ (g) →3 CO₂(g) + 3 H₂O (g). Given the values of AH-393.5 kJ/mol for CO₂ (g) and AH-241.8 kJ/mol for H₂O(g), the calculated value of AH; for acetone O equals - 3563.7 kJ/mol O equals - 1022.5 kJ/mol O equals-248.1 kJ/mol O equals 1202.7 kJ/mol

Using the provided table, determine the molar enthalpy (in kJ/mol) for the reaction 2 NH3(g) + 3 N₂O (g)→ 4 N₂ (g) + 3 H₂O (1) Substance NH3 (9) N₂O (g) N₂ (g) H₂O (1) AHf (kJ/mol) -46.2 81.6 0 -285.8

Use Hess's Law to calculate the enthalpy for this reaction: 4SO3(g) → 4S(s) + 602(g) AH° ??? kJ !! rxn Given the following thermochemical equations: SO2(g)→ S(s) + O2{g) AH° = +296.8 kJ 2SO2(g) + O2(g) → 2SO3(g) AH° = -197.8 kJ

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 = 91.2 kJ S (s) + O₂ (g) --> SO₂ (g) ΔΗ = -382 kJ C(s) + 2S (g) --> CS₂ (1) Do not report units in your answer. Report your answer to one decimal place and include the correct sign in your answer. AH = 82.6 kJ

N2(g) + O2(g)< -----> 2 NO(g)   H = +180.7 kJ 2 H2O(l) <-----> 2 H2(g) + O2(g)   H = +571.7 kJ 4 NH3(g) + 5 O2(g) <-----> 4 NO(g) + 6 H2O(l)   H = -1167.1 kJ Use Hess's law to calculate H for the reaction below. 2 NH3(g)  <----->  N2(g) + 3 H2(g)

Given the following reactions: N2 (g) + O2 (g) → 2NO (g) AH = +180.7 kJ 2N20 (g) → O2 (g) + 2N2 (g) AH = -163.2 kJ the enthalpy of reaction for 2N20 (g) → 2NOo (g) + N2 (g) is kJ. -343.9 343.9 -145.7 145.7 O 17.5

Can you please help me with this question

Given the data below, H°, for the reaction rxn 3C12 (g) + PH3 (g) → PCI3 (g) + 3HCI (g) is kJ. AH° (PCI3 (g) = -288.07 kJ/mol AH°F (HCI (g)) = -92.30 kJ/mol AH°r (PH3 (g)) = 5.40 kJ/mol 570.37 O The AH°, of Cl2 (g) is needed for the calculation. -385.77 385.77 -570.37