Show that the standard heat of the following reaction is equal to -905 kJ/mol at 25 oC. 4 NH3(g) + 5 O2(g) --> NO(g) + 6 H2O(g) Organize your calculations.

Q: A gas system has an initial number of moles of 0.917 moles with the volume unknown. When the number…

A: Given, initial number of moles, n1= 0.917 molinitial volume , V1=?final number of moles , n2=1.04…

Q: A chamber contains equal molar amounts of C₂H₂, CH₄, and H₂. If the total chamber pressure is 5.00…

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Q: A scientist measures the standard enthalpy change for the following reaction to be 74.8 kJ: 2HBr(g)…

A: Enthalpy of formation is the enthalpy change during the formation of one mole of the compound from…

Q: Calculate the pH of each of the following strong acid solutions. (a) 0.000468 M HNO3 pH =  ______…

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Q: The names and chemical formulae of some chemical compounds are written in the first two columns of…

A: we have to determine the major species present when the given compounds are dissolved in water

Q: The ionization energy is the energy necessary to remove an electron from an atom. That is, the…

A: Answer:- This question is answered by using the simple concept of calculation of ionization enthalpy…

Q: A chemist prepares a solution of mercury(I) chloride (Hg₂Cl₂) by measuring out 0.53 mg of mercury(1)…

A: Mass of mercury chloride = 0.53 mg = 0.00053 g  (1 mg = 0.001 g ) Molar mass of mercury chloride =…

Q: How is plutonium made? Group of answer choices Plutonium is mined much like copper. Plutonium is…

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Q: In the above redox reaction, use oxidation numbers to identify the element oxidized, the element…

A: Given - Zn + I2 + 4OH- -> Zn(OH)42- + 2I- ->The element which has oxidation number increases…

Q: 1. You must prepare 250 ml of (0.1 mM EDTA, 2% w/v SDS, 40 mM NaCl) given 4.68% w/v NaCl (FW 58.44),…

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Q: 1. Calculate the pH of the following solutions: (Ka HCO2H is 1.8 x 10-4 and Kb NH3 is 1.8 x 10-5) a.…

A: Given Data :

Q: In flourences why quenching occurred? Solve it steps by steps.

A: Fluorescence quenching is any process that decreases the fluorescence intensity of a sample.  It is…

Q: How do I know if I had R or S phenylsuccinic acid in either R or S proline?

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Q: The weight of KCIO3 is 1.004g. Can you explain how to chance this to g O2? thank you

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Q: What is the concentration of silver(I) ion in a saturated solution of silver carbonate containing…

A: Ksp = 8.8 x 10-12

Q: A ¹H NMR spectrum of the molecule shown below was prepared in deuterated acetone. D₂O was added to…

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Q: Based on the orbital filling configurations, determine which of the following species would have the…

A: Given,  O2  O2+  O22+  N2  N2+

Q: Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: Given ,          Mass of HBr is = 78.5 g       Mass of NaOH is = 33.4 g . The 1:1 molar ratio…

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

A: A.) Endothermic reaction is that in which heat is absorbed and temperature fall down.  Exothermic…

Q: At STP, temperature and pressure have the values of O 273 K and 1 mmHg 273 K and 760 mmHg O 760 K…

A: Answer: STP means standard temperature and pressure and it refers conditions in the atmosphere at…

Q: What is the molar mass of sodium phosphate, Na3PO4?

A: Molar mass is the mass of 1 mole of the compound and it is represented in grams per mole.

Q: A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic…

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Q: Consider the multiplicity of the ¹H NMR peak shown below. Identify how many hydrogens are on the…

A: 1H-nmr spectra provides the information of hydrogen environment of unknown compound.  The splitting…

Q: Question 8 Which equation shows the net ionic equation for the neutralization of a strong acid with…

A: A buffer solution has two type -> Acidic buffer -> Buffer solution containing weak acid and…

Q: (4) Rank the following compounds in order of reactivity toward an SN2 reaction. (1=best)

A: Given : formula of compounds. Tip : reactivity of Sn2 : ch3>1°>2°> 3°        And stability…

Q: HCl + H2O → H3O+ + Cl- 50mL of H2O 2mL of 1M HCl Calculate the expected pH of this solution.

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Q: Alkenes undergo an addition reaction with borane in tetrahydrofuran (THF). For the reaction below:…

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Q: predict if the following solution is optically active by writing active or inactive. Can some one…

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Q: Draw the major product of this reaction. Ignore inorganic byproducts and CO₂. 1.0. 2. HOẶC Select to…

A: Ozonolysis is an organic redox reaction in which  ozone is employed to cleave the unsaturated bonds…

Q: (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas to produce gaseous carbon dioxide (CO₂) and gaseous…

A: Given -> Weight of octane = 2.3 gm  Weight of O2 = 4.9 gm

Q: H₂C H₂CO 오 CH₂ + CHINH, 2NH₂ H OCH3 H E + F 1) Med 2) H (d) (f) (e)

A: These reaction can be explained as:

Q: 1. a) Draw the structures corresponding to the following IUPAC names. A)…

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Q: The reaction between hydrochloric acid and aluminum produces hydrogen gas and aluminum chloride. How…

A: Given :  Moles of HCl = 7.20 mol

Q: Identify which of the following compounds is meso. 1 Cl A) I B) II C) III D) IV IV

A: Maso compound is a compound in which there is either plane of symmetry or center of symmetry that…

Q: 3. True or false: Because dry ice sublimes, carbon dioxide has no liquid phase. (a) True (b) False

A: The statement is True

Q: Compound X has a molar mass of 266.64 g-mol and the following composition: element aluminum 0…

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Q: Aromatic heterocyclic chemistry: State whether the following drugs are aromatic heterocycles and if…

A: Aromatic: cyclic and planar with delocalized (4n+2) pi electron system

Q: When a solution of AgNO3 is mixed with a solution of K₂SO4, a solid precipitate will form. True the…

A: AgNO3 and K2SO4 are water soluble compounds while Ag2SO4 is insoluble compound.

Q: Is Methylamine polar protic or aprotic?

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Q: Choose the best reagents to complete the reaction shown below. mal H al A B D E 1. NaBH. 2. H₂O* Na…

A: Internal alkynes can be reduced into trans alkene when they react with sodium metal in liquid…

Q: When the 2.5M NaOH (15mL) solution is added to the solution of 50:50 mixture of benzophenone and…

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Q: Calculate the percent ionization of formic acid solutions having the following concentrations.…

A: Formic acid(HCOOH) is a weak acid. Therefore it is not dissociated completely. Let us consider…

Q: 2. Indicate whether each of the following statements is true or false. If you think a statement is…

A: 1) If buckyballs can be woven into fabric, they could be used to create bullet and knife-proof…

Q: Ethanol and water form an ideal solution

A: Given : name of compounds Tip : non-polar compounds make ideal solution

Q: Select all of the correct statements about reaction quotients and equilibrium constants from the…

A: Reaction quotient and equilibrium constant have the same mathematical expression, but they differ in…

Q: The pressure of a gas sample at 16.5 °C is increased from 1.10 atm to 2.30 atm by heating at a…

A: Initial temperature (T1) = 16.5°C = 16.5 + 273=289.5 K Initial pressure (P1) = 1.10 atm  Final…

Q: Question 15 At which point in the titration is the pH solely dependent on the excess strong base? 13…

A: The given titration curve is for weak acid and strong base..

Q: (a) If the molar solubility of Cd3(AsO4)2 at 25 oC is 1.15e-07 mol/L, what is the Ksp at this…

A: Molar solubility is represented as moleL mole = massmolar mass Molar mass of Y2(CO3)3 = 357.8384…

Q: When a strong acid and base react, the products are ___________ and a salt.

A: In this question, we have to answer When a strong acid and base react, what will the products…

Q: Identify the relationship between these two compounds. HO H CH₂CH3 H CH3 A) enantiomers HO H CH3…

A: The isomers that are converted into each other by rotation around a single bond are known as…