The space shuttle orbiter utilizes the oxidation of methyl- hydrazine by dinitrogen tetroxide for propulsion: 4N,H,CH3(1) + 5N,0,(1) - 12H,O(g) + 9N,(g) + 4CO,(g) Calculate AH for this reaction using data in Appendix 4.

Q: 2. Approximately 0.40 hectare of rainforest are capable of absorbing 1000 kg of CO2. Given that the…

A: T = 310K  P = 1atm  Amount of CO2 = 350kg  Molar mass of CO2 = 44.01g/mol R = gas constant = 0.0821…

Q: Which of the hydrides below will be hydrolysed in water to give a basic solution? А CH B SIH4 с Вн D…

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Q: Write the Nernst equation for the reduction of white phosphorus to phosphine gas for the following…

A: Nernst Equation determines the electrode potential of the chemical reaction. Nernst equation for the…

Q: What is the pH of a 0.0300 M solution of NaNO2? (K, for HNO2 = 4.00 x 104) %3D O 7.00 O 7.94 8.81…

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Q: At altitudes much greater than 30 km, photochemical decomposition of dinitrogen produces the…

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Q: Given MnO2, FeCl3, Pt, and Ni, which would you select for decomposing KClO3 to give O2?

A: Catalyst is chemical substance that enhance the rate of chemical reaction but itself remain…

Q: The following Latimer potential diagram shows bromine species under acidic conditions a) Identify…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Why alkalis like sodium hydroxide and potassium hydroxide should not be leftexposed to air?

A: Alkalis like sodium hydroxide and potassium hydroxide should not be exposed to air because both of…

Q: Which of these two oxides, SO3 and P4O10 , when reacts with water will produce stronger acid?

A: P4O10 and SO3 are acidic oxides and when they combine with water forms acids.

Q: Based on its molecular orbital diagram, is peroxide ion O22-  paramagnetic or diamagnetic?

A: Given,  Based on its molecular orbital diagram, is peroxide ion O22-  paramagnetic or diamagnetic ?

Q: Qu) Are The elements sodium, aluminum, and chlorine are in the same period? And give the right…

A: The given elements sodium, aluminum and chlorine lie in the third period of periodic table. Their…

Q: The elements from Group 1 can react directly with hydrogen to produce hydrides. Which of the…

A: The elements from Group 1 can react directly with hydrogen to produce hydrides.

Q: How the ns2np5 configuration accounts for halogen reactivity with metals

A: The reactivity of halogens with metal has to be explained.

Q: Write the reaction quotient, Qc, for each of the following reactions:(a) The first step in nitric…

A: Reaction quotient is the ratio between the concentration of products and the concentrations os the…

Q: What is the pH of a 0.15 M solution of sodium nitrite?  The pKa of nitrous acid is 3.15.

A: Consider the given information is as follows; Concentration of sodium nitrite = 0.15 M    pKa of…

Q: Outline the separation of the following groups of ions, leaving out all unnecessary steps a. Ag*,…

A: a.  Ag+ , Hg+2 belongs to group - I , where as co+2 belongs to group - IIIB b. All are from group -…

Q: Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction…

A: As, Potassium dichromate is powerful oxidising agent in acidic medium.  And in Presence of dilute…

Q: 4. Give two aspects that need to be fulfilled when you look at the structure of a dye made by diazo…

A: The use of diazo compounds as dye pigment are known since several decades.The structural aspects of…

Q: What are the fundamental prerequisite of the Sarbanes Oxley act and how it is beneficial to…

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Q: hich of the following statements is false regarding hydrogen peroxide? Reaction of H2O2 with Fe2+…

A: Reaction of H2O2 with Fe2+ ions will generate OH radicals. See the written solution

Q: Identify the following hydrides as ionic, metallic, or molecular:(a) BaH2, (b) H2Te, (c) TiH1.7.

A: The hydrides are mainly generated by combining H-molecule with any metal. In hydrides, H-atom…

Q: In cation exchange reaction, how many grams of K+ will replace 2 meq of Ca2+ if K+ has a atomic…

A: One mole is the atomic mass or molecular weight per liter of each cation or anion.  K+ = 39 g/mol…

Q: Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

A: Reducing nature is inversely related to the stability of the hydride of the element. Means on…

Q: Calculate the pH of an aqueous solution prepared by dissolving 5.61 g of KOH pellets in water and…

A: Mass of KOH = 5.61 g Volume = 0.500 L Molar mass of KOH = 39.10 + 16.00 + 1.008 = 56.108 g/mol pH of…

Q: Outline the separation of the group of ions, leaving out all unnecessary steps Pb**, Cu, ca** +2 +2…

A: Given - Ions - Pb+2 , Cu+2 , Cd+2    These all are group II insoluble sulfide salt's ions , for…

Q: Neutralization of phosphate . Given that phosphoricacid (H3PO4) can give up three protons with…

A: Titration curve for H3PO4 versus NaOH

Q: The reaction of calcium hydride, CaH2, with water can be characterized as a Lewis acid-base…

A: In the given chemical reaction of calcium hydride with water: The ions are separated as: Here, the…

Q: 1.Does O3+2H++2e-> O2+2H2O release more heat in comparison to O2+4H++4e-> 2H2O. Explain in great…

A: #1:  The standard reduction potential for the two reduction half-reactions are: O3(g) + 2H+ + 2e-…

Q: Is it possible that azo dye is possible in water?

A: Presence of azo dyes in water

Q: Find the heat energy evolved is slaking 1.0 Kg of quicklime [ CaO] according to the reaction given…

A: Formula for heat energy: Q = mC∆T where m= mass , C= specific heat capacity ,∆T = (final temperature…

Q: Write a balanced chemical equation for the reaction that occurswhen (a) titanium metal reacts with…

A: The balanced chemical equation has to be given for the reaction of titanium metal with oxygen…

Q: Calculate the pH for a 0.200 M KClO2 aqueous solution. (Ka for HClO2 is 1.1× × 10–2).

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Q: Why does the reactivity of the alkali metals decrease from cesium to lithium?

A: The alkali earth metal include: Li, Na, K, Rb and Cs. They have a valence electron configuration…

Q: 10. The oxides of Group 15 react with water to give acids. Which of the following chemical equation…

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Q: Why, do you think, the sulfur extracted during the Frasch process is 99.5% - 99.9% pure? Why can’t…

A: Frasch process is based on the principle that sulfur has a low melting point. Sulfur is pushed out…

Q: Find the pH of a 0.381 M aqueous solution of hypobromous acid (HOBr), for which Ka = 2.1 * 10-⁹.…

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Q: Would the reaction of beryllium, Be, with oxygen be more or less vigorous than ba?

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Q: The only alkali metal that reacts with oxygen to give a compound with the expected stoichiometry is…

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Q: Show your solutions in calculating the value of Ar for naturally occurring sulfur if the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Consider the reaction: CH 4( g) + 2O 2( g) → CO 2( g) + 2H 2O( g) Which of the following statements…

A: Given: The reaction is CH 4( g) + 2O 2( g) → CO 2( g) + 2H 2O( g)

Q: Write the reactions of the hydrolysis of sodium tripolyphosphate (Na5P3O10) in aqueous solution.

A: Sodium triphosphate undergoes hydrolysis to form sodium tetraphosphate and sodium hydroxide. This…

Q: Determine the pH of a 10-3 mol/L solution of (a) hydrogen sulfate ion (pKa = 1.99), (b) formic acid…

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Q: If 4.381 g of sodium dihydrogenphosphate and 5.207 g of disodium hydrogenphosphate are dissolved in…

A: Given : Mass of sodium dihydrogenphosphate i.e NaH2PO4 = 4.381 g Mass of disodium hydrogenphosphate…

Q: 5. Explain why lattice enthalpy calculations based on the Bom-Mayer equation reproduce the…

A: Born-Mayer equation is used to calculate the lattice energy of a crystalline ionic compound.…

Q: Under what conditions is the FeO42- ion thermodynamically stable in aqueous solution?

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Q: A 0.100 M solution of nitrous acid (HNO2) had a pH of 2.074. What is the Ka value for nitrous acid.

A: