The energy required to split apart dioxygen according to the equation is 8.17 × 10-19 J/molecule. O2(g) → 2O(g) Calculate the frequency (Hz) of the photon that can dissociate dioxygen. Express answer in scientific notation.

96. Solid fuel in the booster rockets for spacecraft consists of alumi- num powder as the fuel and ammonium perchlorate as the oxi- dizing agent. 3 NHẠCIO4(s) + 3 Al(s) Al,O3(s) + AlCl3(s) + 6 H,O(g) + 3 NO(g) If a rocket launch burns 2.200 × 10³ kg of aluminum, calculate the energy produced in joules. Calculate the volume of the gas produced, assuming it was cooled back to 298 K at 1 atm. The standard enthalpy of formation of solid ammonium perchlo- rate is –295.3 kJ/mol.

A is -1214 Ethen 23.molar mass

The synthesis of Hansa yellow dye takes place in a series of two steps. On Sunday June 9th, 1996 a violent runaway reaction occurred causing very significant damage to equipment and buildings. After a detailed analysis, the plant was rebuilt, and production resumed. What is the enthalpy of the overall reaction? Show work for credit. Can you explain which of the two steps was most likely to blame for the incident? Step 1: CsH;CIN2O2(aq) + NANO2(aq) + 2HCI(aq) → C6H3CIN3O2*(aq) + Cl(aq) + 2H2O(I) + NaCI(aq) AH1 = -1212 kJ/mol Step 2: C6H3CIN3O2*(aq) + Cl'(aq) + C10H10CINO2(aq) → C16H12C12N4O4(aq) + HCl(aq) AH2 = 637 kJ/mol %3| Overall Reaction: C6H5CIN2O2(aq) + NaNO2(aq) + HCI(aq) → 2H2O(1) + NaCI(aq) + C16H12CI2N4O4(aq) AHrxn = ? kJ/mol %3D

Part A Calculate the enthalpy of the reaction 2NO(g) + O2(9)–→2NO2(9) given the following reactions and enthalpies of formation: A N2(9) + O2(g)→NO2(9), AfH = 33.2 kJ mol 1 B. N2 (9) + ¿O2(9)→NO(g), AfHß = 90.2 kJ mol 1 Express your answer with the appropriate units. • View Available Hint(s) ? A¢H° = Value Units Submit

11:34 Send a chat *** Calculate the kinetic energy of a 175 g baseball moving at a speed of 55 m/s (87 mph). O 2.65 x 105 J O 5.29 x 105 J 265 J 529 J O 1.1 x 102 J

The steps of the Born-Haber cycle are shown for the ionic compound MX2, made up of generic metal M and generic, gaseous halogen X. Identify the overall reaction and identify the name of the enthalpy change for each reaction.