For a particular isomer of C,H,8, the combustion reaction produces 5108.7 kJ of heat per mole of C,H,3(g) consumed, nder standard conditions. 25 C,H18(g) +0,(g) →8 CO,(g) + 9H,O(g) AH = -5108.7 kJ/mol What is the standard enthalpy of formation of this isomer of C,H,(g)? AH; = kJ/mol %3D

For a particular isomer of C,H8, the combustion reaction produces 5099.5 kJ of heat per mole of C,H,(g) consumed, under standard conditions. 25 C,H,(g) +0,() –→ 8 CO, (g) + 9 H,O(g) AHn = -5099.5 kJ/mol What is the standard enthalpy of formation of this isomer of C,H,(g)? AH; = kJ/mol

187 g 662g 44.Given that CaO(s) + H,O(1) Ca(OH)2(s), AH°, =-64.8 kJ/mol, how many grams of CaO must rxn react in order to liberate 525 kJ of heat? 6.92 g 56.1 g 455g 606 g 3.40 x 10 g 45.The combustion of pentane produces heat according to the equation AH°r-3,510 kJ/mol C;H12(1) + 80(g)5CO:(g)+ 6H,O(1) How many grams of CO, are produced per 2.50 x 10' kJ of heat released? 0.0809g 3.56g 31.3g 157 g 309g in Colorado requi per month, How res 20. GJ of heat

Using the standard enthalpies of formation (pictured), calculate ΔHº for the following reactions:a) CO2 (g) + 2NH3 (g) → H2O (g) + CO(NH2)2 (g) b) 2CH4 (g) + Cl2 (g) → 2 CH3Cl (g)

4. Methane burns in air to form carbon dioxide and water according to the following equation: CH… + 20 + CO, , + 2HẠO -882 kJ/mol Which of the following statements about this reaction is FALSE? ΔΗ A) The reaction is exothermic. B) The temperature of the surroundings must increase. C) The change in enthalpy could be expressed just as accurately by showing heat as one of the products of the reaction. DI The enthalpy of the products is greater than that of the reactants. E) Chemical bonds are both broken and formed in this reaction.

Calculate the standard enthalpy change (kJ/mol) for the following process given the enthalpies of formation provided below. A + 2 B → 3 C AH¢A = 4 kJ/mol AH;B = 29 kJ/mol AH:C = 92 kJ/mol

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when octane (C8H18) is burned under standard conditions, the enthalpy of combustion is -5698.34KJ / mol. Using the information provided. what is the heat of formation of octane?

The pH value of a solution is 9.00. What is the concentration of the hydronium ion?

For which one of the following is the enthalpy of the reaction the same as the enthalpy of formation? A) H, (9) + F, (g) -2 HF (g) B) Ca (s) + ½ 0, (g) → CaO (s) C) 2 CH,OH (1) + 3 0, (g) → 2 CO, (g) + 4 H,O(g) D) Sro (s) + CO, (g) → → SrCO, (s) MacBook Air DI 80 888 F7 F5 F3 F4 F2 & #3 3 @ $ % 4 5 6 7 8 9 2 P W E R Y F J K. D C V B N