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What are primary and secondary photochemical processes? Differentiate between them.
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- What is the use of burnt length of fuse wire in bomb calorimetry? Why is it subtracted to get the heat flow in a bomb calorimeter?Given the data in the table below, AHrxn for the reaction Ca(OH); + 2H;AsO4 → Ca(H;AsO4)2 + 2H;O is _ kJ. [A] -4219 (B] -130.4 [C] -4519 [D] -76.4 AH, (kJ/mol) -986.6|| Substance Ca(ОН), HASO, Ca(H;AsOa)2 -900.4 -2346.0 H;0 -285.9 O A В C DExplain the Difference between thermal and photochemical reactions ?
- Step by step.Please help me with my he. I can't seem to solve this problem. I hope you can help me This is a guide to answer the activity. HESS LAW (Law of Heat Summation) “The enthalpy change of the overall process is the sum of the enthalpy changes of the individual component steps.” - It is the standard enthalpy of Reaction, ΔHᵒ. - It can be illustrated in the following example Consider the following reactions: (a) Fe(s) + O2(g) à FeO(s)ΔHᵒ = -272 kJ (b) 2 Fe(s) + O2 (g) à Fe2O3(s)ΔHᵒ = -82.5 kJ 1. Make sure to write the balance equation. 2. The final equation requires 2 moles of FeO which means we will multiply equation (a) and its enthalpy change by 2. 3. Reverse equation (a), which means, the product goes to the reactant side, (2) (FeO(s) à Fe(s) + O2(g))ΔHᵒ = (-272 kJ)(2) = 544 kJ 2 FeO(s) à 2 Fe(s) + O2(g))ΔHᵒ = -825.5 kJ 4. Combine the final equation (a) and the initial equation (b). And then cancel the same components with same number of particles. In this…(100g)(4.184J/g K)(t-22)=(275g)(0.444J/g K)(t-100) What is the step by step solution to this problem?
- Esc ||| = OTHERMOCHEMISTRY A student runs two experiments with a constant-volume "bomb" calorimeter containing 1200. g of water (see sketch at right). Calculating heat of reaction from bomb calorimetry data First, a 5.000 g tablet of benzoic acid (C6H,CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 16.00 °C to 38.96 °C over a time of 9.2 minutes. 2 4. Next, 5.730 g of acetaldehyde (C₂H₂O) are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 16.00 °C to 42.19 °C. 84°F Sunny Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: FI Explanation Is this reaction exothermic, endothermic, or neither? 4- F₂ Check 2C₂H4O(g) + 50₂(g) 4CO₂(g) + 4H₂O(g) Be sure any of your answers that are…To calculate the heat of combustion of naphthalene with calorimetric bomb, first the heat capacity of the calorimetric bomb is calculated. a) As a result of the burning of 1 g of Benzoic acid, a temperature rise of 2.63oC and a temperature of -3234.7 kJ / mol was released. Find the heat capacity of the calorimetric bomb. b) 6.4oC temperature difference was calculated as a result of burning 5 g of Naphthalene. Calculate the combustion temperature of naphthalene. (Molar mass of naphthalene: 128.17 g / mol)(-2220.1)=[-1180.5+-1141.2]-[x] (-2220.1)=[-2321.7][2] +23 21.4 +2321.7 -101.6x Днез нд →-101.6 h mol Assuming that all of the heat evolved in burning 30.0 grams of propane is transferred to 8.00 kilograms of water (specific heat = 4.18 J/g-K), calculate the increase in temperature of water. online at www.nms.org. AP is a trademark of the College Entran terial, Used with permission.
- Explain and show work step by step: 1. A mixture of Al2O3(s) and CuO(s) weighing 18.371 mg was heated under H2(g) in a thermogravimetric experiment. On reaching a temperature of 1000 °C, the mass was l7A62 mg and the final products were Al2O3(s), Cu(s), and H20(g). Find the weight percent of Al2O3(s)in the original solid mixture.The chemical reaction representing aerobic respiration is, C,H„0,(s) + 60,(g) → 6CO,(g) + 6H,O(g) A,H =-2500 kJ mol and is the exact reverse of photosynthesis. A small child exhales about 3 moles of CO, in a 24 hour period, what amount of energy (in kJ) is associated with the conversion of 3 moles of CO, back to glucose by photosynthesis? Submit your answer with correct sign, units and significant figures! Submit responsePls do Asap...!









