The combustion of ethene, C2 H4, occurs via the reaction C2H4 (g) + 302(g)→2CO2(g) + 2H20(g) with heat of formation values given by the following table: AH (kJ/mol) Substance C2H4 (g) 52.47 CO2(g) -393.5 H2O(g) -241.8 Calculate the enthalpy for the combustion of ethene. Express your answer to four significant figures and include the appropriate units. • View Available Hint(s) HA ? AHm = Value Units

Which of the below reactions corresponds with that which represents the standard enthalpy of combustion (also called “heat of combustion”) of butane, C4H10?   Which of the below reactions corresponds with that which represents the standard enthalpy of combustion of butane, C4H10?

Tetrachloromethane, CCl4, is formed from methane and chlorine in the following reaction: CH4 (g) + 4 Cl₂ (g) → 4 HCl(g) + CCl4 (g) = Calculate A₁H, the enthalpy change for this reaction, using the enthalpies of formation of CO₂ (g), H₂O(l), and CCl4 (g), (▲ƒ H° = enthalpy changes for the following reactions: CH4 (g) + 2 O2(g) → 2 H₂O(l) + CO₂(g) ΔΗ° :-890.4 kJ/mol-rxn 2 HCl(g) → H₂(g) + Cl₂ (g) ΔΗ° +184.6 kJ/mol-rxn = ΔΗ° = Compound AfH (kJ/mol) H₂O(g) CO₂(g) -285.8 -393.5 kJ/mol-rxn - 95.98 kJ/mol), and the

For which one of the following is the enthalpy of the reaction the same as the enthalpy of formation? A) 2 Fe (s) + ³/2 O₂ (g) → Fe₂O3 (S) B) HCI (aq) + NH3 (g) → NH4Cl (s) C) ASF3 (s) → As (s) + ³/2 F₂ (g) D) N₂ (g) + 3 H₂ (g) → 2 NH3 (9)