Question 2 Calculate the amount of heat released in the complete combustion of 8.17 grams of Al to form Al2O3(s) at 25°C and 1 atm. A for Al2O3(s)=-1676 kJ/mol OA. 237 kJ OB. 127 kJ OC.203 kJ OD. 101 KJ E. 254 kJ 4Al(s)+302(9)→2A1203(3)

Question 2 Calculate the amount of heat released in the complete combustion of 8.17 grams of Al to form Al2O3(s) at 25°C and 1 atm. A for Al2O3(s)=-1676 kJ/mol OA. 237 kJ OB. 127 kJ OC.203 kJ OD. 101 KJ E. 254 kJ 4Al(s)+302(9)→2A1203(3)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

The combustion of 0.1564 g benzoic acid increases the temperature of a bomb calorimeter by 2.53°C. Calculate the heat capacity of this calorimeter. (The energy released by the combustion of benzoic acid is 26.42 kJ/g.) Heat capacity = __________ kJ/°C A 0.2137-g sample of vanillin (C8H8O3) is then burned in the same calorimeter, and the temperature increases by 3.22°C. What is the energy of combustion per gram of vanillin? Energy =__________ kJ/g Per mole of vanillin? Energy = ___________ 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
O 437.0 kJ O 256.0 kJ 103.6 kJ O-103.6 kJ
3. A 10.0 g sample of pure acetic acid, CH3CO2H, is completely burned. The heat released warms 2.0 L of water from 22.3°C to 39.6°C. a. Assuming that no heat was lost to the calorimeter, what is the molar enthalpy change of the complete combustion of acetic acid? Express your answer in kJ/mol.I b. Will the bonds in the products be longer or shorter than the bonds in the reactant
What would be the heat of combustion of C4H10(g) if the heats of formation of C4H10(g), CO2(g), and H2O(l) are -124.73 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively.C4H10(g) + 13/2O2(g) ↔ 4CO2(g) + 5H2O(l)
Use the following equations to calculate the heat of the reaction for the formation of methanol. CH3OH(l) + 3/2 O2(g) → CO2(g) + 2H2O(l) ∆ Ho = -727 kJ C(gr) + O2(g) → CO2(g) ∆ Ho = -394 kJ H2(g) + 1/2 O2(g) → H2O(l) ∆ Ho = -286 kJ Calculate ∆Ho for the following reaction:C(gr) + 2H2(g) + 1/2 O2 → CH3OH(l) methanolUse kJ for your answer.
7. Estimate the enthalpy of reaction (in kJ/mol) for the combustion of methane. Be sure to show a lewis structure for each molecule. CH, (g) + 20, (g) ·CO, (g) + H,O (g) Bond Bond Enthalpy (kJ/mol) C-O 351 C=0 799 CEO 1070 O-O 142 O=0 498 C-H 414 O-H 460
The flame in a torch used to cut metal is produced by burning acetylene (C2H2) in pure oxygen. Assuming the combustion of 1 mole of acetylene releases 1251 kJ of heat, what mass of acetylene is needed to cut through a piece of steel if the process requires 90.8 × 104kJ of heat?
Before the introduction of chlorofluorocarbons, sulfur dioxide (enthalpy of vaporization=25.00 kJ/mol) was used in household refrigerators. What mass of SO2(in kg) must be evaporated to remove as much heat as evaporation of 1.00 kg of CCl2F2 (enthalpy of vaporization=17.4 kJ/mol)?
Don't give handwritten answers Which of the following is the formation reaction for N2O (g)? Group of answer choices A.) 1/2 N2(g) + 2 O2(g) → NO2(g) B.) 1/2 N2(g) + O2(g) → NO2(g) C.) N(g) + O2(g) → NO2(g) D.) 2 N2(g) + O2(g) → 2 NO2(g) E.) N(g) + 2 O(g) → NO2(g)
22. Given that the enthalpy of neutralization for the reaction of HCl (a strong acid) and NaOH (a strong base) is always -55.90 kJ per mole of H2O formed, what is the concentration of a 65 mL sample of HCl if the enthalpy of neutralization for the reaction was found to be -5.38 kJ, assuming no heat is lost to the calorimeter? 0.96 M 1.48 M 1.60 M 0.38 M 4.63 M
For the reaction S(8) + O₂(g) → SO₂ (g) AH = -296 kJ per mole of SO₂2 formed. [Review Topics] a. Calculate the quantity of heat released when 1.78 g of sulfur is burned in oxygen. kj Submit Answer b. Calculate the quantity of heat released when 0.486 mol of sulfur is burned in air. kj c. What quantity of energy is required to break up 1 mole of SO2(g) into its constituent elements? kj Retry Entire Group [References] more group attempts remaining