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Q: How many grams of Al2O3 can be produced from 9.5 g Al?
A: Given, Mass of Al = 9.5g. The reaction of Al2O3 formation from Al is given as follows:
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- How much iron oxide (Fe2O3) is needed to make a 500 mg fuel rich mixture of aluminum (Al) and iron oxide that has an equivalence ration of 1.3? What is the actual F/O ratio for this mixture? Please provide only typed answer solution no handwritten solution needed allowedMr. Naresh works in a multinational company. He is stressed due to his hectic schedule. Mr. Amit, his friend, comes to know that he has started taking sleeping pills without consulting the doctor. Mr. Amit requests ‘ Naresh to stop this practice and takes him to a Yoga centre. With regular Yoga sessions, Mr. Naresh is now a happy and relaxed man. ‘ After reading the above passage, answer the following questions: (i) Write the values shown by Mr. Amit. (ii) Which class of drugs is used in sleeping pills? (iii) Why is it not advisable to take sleeping pills without consultation with the doctor?QUESTION 4 Calculate ΔG°rxn for the reaction below at 25.0°C. 2H2O2 (ℓ) → 2H2O (ℓ) + O2 (g) Report your answer in kJ/mol to two decimal places. ΔG°f (kJ/mol) H2O2 (ℓ) -120.35 H2O (ℓ) -237.13
- Calculate the following values. Enter your answers in scientific notation. (a) What is the Kb of the benzoate ion, C6H5COO−? Kb = × 10 (b) What is the Ka of the 2−hydroxyethylammonium ion, HOCH2CH2NH3+? ( pKb of HOCH2CH2NH2 = 4.49 ) Ka = × 10Give answer to all parts? Initial Temp of HCl: 22.96 C Final Temp of HCl: 28.30 C Moles of HCl: .05 moles Moles of NaOH: .05 moles Cs water: 4.184 J/g C Accepted delta Hrxn: -55.8 kJ/mol 1. what is the qwater. pls include formula. 2. calculate delta Hrxnn using the moles, temp and cswater 3. calculate delta Hrxn % errorIf the empirical formula of a compound is found to be CH2, which of the following value is a plausible molecular mass for the compound? The answer is 70.15. How did you get that?
- 13. A sample of 15.00 g of a hydrated sodium sulfate salt contains 7.05 g of water. The value of the "x" in the hydrated salt is: NaSO4 . xH2O Answers: a)7 b)10 c)1 d)3 e)5is the A:B ratio just a place holder for the unknown compound can you use other variables in place of "A and B" also would H2O work as another formula instead of Na2O3. Syngas is a mixture of carbon monoxide, carbon dioxide, and water vapor that is used for making fertilizer, methanol, and other products. It is produced by heating fossil fuels under low-oxygen conditions to promote incomplete combustion. Write an equation for the complete combustion of the gasoline component cyclopentane, C5H10 (l) and the incomplete combustion of cyclopentane with 20% of the carbon appearing as CO(g).
- So for the question below, I have the answer worked out from class but I don't understand certain steps. For example, why does KiCi+KaCa / KaCa = 4.50 become KiCi/KaCa + KaCa/KaCa = 4.50 ? Where does the second KaCa come from? Next, you cancel values and get 1 + Ka,i(Ci/Ca) = 4.50 -- in this step where does the one come from? Glutathione is an important antioxidant found in plants and animals. You are measuring glutathione in blood, but the analysis is complicated by many potential interferents including ascorbic acid. In one of your studies, you analyze a solution of 10.0 ppb glutathione and 1.5 ppb ascorbic acid, the signal was 4.50 times greater than the signal you measured for sample containing only 10.0 ppb glutathione. What is the selectivity coefficient for this analysis?Give (in order) the correct coefficients to balance the following equation:NH3+ O2→ NO + H2O 4, 4, 4, 6 2, 3, 2, 3 1, 1, 1, 1.5 4, 5, 4, 6 2, 2, 1, 3Calculate deltaH1 Please provide 3 sig figs, units are KJ/mol, please only give number value in answer. Mg(s) + 1/2O2(g) --> MgO(s) deltaH1 = ? Mg(s) + 2H+(aq) --> Mg2+(aq) + H2(g) deltaH2 = +10.1 kJ/mol MgO(s) + 2H+(aq) --> Mg2+(aq) + H2O(l) deltaH3 = -5.00 kJ/mol 1/2O2(g) + H2(g) --> H2O(l) deltaH4 = -286.0 KJ/mol