A sample of Zn(s) is reacted with HCl(aq) to form hydrogen gas. The H2 gas bubbles out of aqueous solution and is collected in a 475 mL container at 617 Torr and 25.0 C. How many grams of zinc reacted?

Q: 1. Calculate the pH of the following solutions: a. 0.020M potassium acid phthalate solution; Ka =…

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Q: cat. H NHẠCH, NHCH, CH₂ * CHỊCH, CHO The Mannich reaction is one of the few three-component…

A: Mannich reaction completes in 4 different steps to give the final product. The complete mechanism is…

Q: COSO4 H₂O Na₂CRO4.4H₂O CuF2.2H₂O Sr(NO3)2 6H₂O ZnSO4.7H₂O Cobalt(II) sulfate monohydrate Sodium…

A: To properly denote the name of a hydrated compound, firstly we put the name of the salt. In the…

Q: The temperature on a sample of pure X held at 6.3 atm and 189. "C is decreased until the sample…

A: Phase diagram describes the different phases in which a substance can exist on a pressure vs…

Q: Find ∆Hf for Al2O3 using the following data   2 Al  +  3/2 O2  ---->  Al2O3          H2  +  ½ O2…

A: #5: Your calculation for ∆Hf is correct.   ∆Hf = - 1670 kJ/mol  Since we have found the  ∆Hf for the…

Q: exlain please

A: So we are given two different states, one is before heating (20 K) and the 2nd is after heating(300…

Q: Write names as appropriate for each of the following monatomic ions.  Is the ion/cation placement…

A: While writing the name of anion suffix 'ide' is used while in case of cation suffix 'ium' is used.

Q: Calculate the motority of 655.809 of lithium nitrate in 33.5 mL of solution.

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Q: Cuimt G using will the Couse wenk acid strong (1) ром equivalence on y (b) GIVE (C) be at acidic…

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Q: 5. For each of the following reactions schemes: a. Draw in the mechanistic curved arrows (each of…

A: An acid is a species that donates a proton(H+). A base is a species that accepts a proton(H+).

Q: AAAA A student was dissolving 3.25 g of a nonelectrolyte solute in water to make 315 mL of solution…

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Q: Select the most reasonable formula for the compounds with the following mass spectral data. M m/z…

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Q: A saline solution is prepared by dissolving 23 g of NaCl in 3.4 g of water. If the molar freezing…

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Q: Note: Derive the expression relating the two kinetic constants first before plugging the values. mol…

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Q: The normal boiling temperature of diethyl ether, (C 2 H 5 ) 2 O , is 307.7 K and the standard…

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Q: 9.) If Ke=0.25 for A2+2B2AB, what is the value of Ke for the reaction 4AB2A2 + 4B? K₁= [AB]² = 0.25…

A: Given, A2 + 2B ⇌ 2AB  Kc = 0.25 4AB ⇌ 2A2 + 4B  Kc = ? Equilibrium constant for reverse reaction:…

Q: Ten liters of a gas at 396 K and a pressure of 1.12 atm. The pressure is decreased to 0.52 atm…

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Q: What is the pH of a solution containing 0.354 mol L-1 CH3NH2 and 0.332 mol L-1 CH3NH3+? Round your…

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Q: Amines   Instruction: Propose a synthesis pathway for the following. 1. benzoic acid to…

A: Here we are required to synthesize benzylamine

Q: A chemist titrates 240.0 mL of a 0.7332 M benzoic acid (HC,H,CO₂) solution with 0.4857 M KOH…

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Q: Which of the following is/are using plasma?

A: In computers plasma display is used which is display for vedios by spotting each plasma or charged…

Q: Write names as appropriate for each of the following hydrates.   Do these hydrate names need roman…

A: Write names as appropriate for each of the following hydrates.

Q: How many proton NMR signals in the spectrum of the following compounds? H₂C CH3 One signal Three…

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Q: What is the main product for each of the following reactions? (d) Styrene + CH3CH2COCl AlCl3, then…

A: Friedel-Craft's acylation of aromatic compounds takes place in presence of AlCl3 and acid chloride,…

Q: ! * F1 2 W CH3 3 I ||| F2 CH3 CH3 CH3 # 3 E Identify the monomer(s) used in the production of this…

A: Addition polymerization is when the monomer molecules bond to each other without loss of any other…

Q: A sample of water vapour at 200 C is compressed isothermally from 302c * m ^ 3 to 58c * m ^ 3 What…

A: We can solve this problem by using following equation ∆G= RTln(V1/V2) Where ∆G= change in molar…

Q: What is the net rate of diffusion given a concentration gradient of 0.75 105 M if the cell is 100…

A: We can solve the  given problem by using  Ficks law  Rate of diffusion= (diffusion coefficient ×…

Q: A solution of 0.600 g of diprotic acid in 100.0 mL of water was titrated with 0.300 M NaOH to the…

A: Solution: Balanced neutralization reaction between diprotic acid and NaOH consider H2A is diprotic…

Q: Amines Instruction: Propose a synthesis pathway for the following benzoic acid to…

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Q: d) The formation of methyl pentanoate

A: Simple rules for nomenclature of compound

Q: Calculate the solubility at 25 °C of AgCl in pure water and in a 0.0170 M AgNO3 solution. Round both…

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Q: Rb+1 Pb+4 S-² Cr+2

A: Write names as appropriate for each of the following monatomic ions.

Q: 12.24 Propose an efficient synthesis for each of the following transformation a. b. Answer LOH OH

A: Here we have to synthesize the following given compounds from the given starting materials.

Q: Choose the answer that shows the following solutions in order by their decreasing freezing points…

A: Choose the answer in order of decreasing freezing point of the following ??

Q: The Clausius-Clapeyron equation is derived in Section 5.5 on thelassumption that the enthalpy of…

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Q: Devise a synthesis for the following compound. You may use any organic or inorganic materials MeO OH…

A: It involves Friedelcraft reaction, wittig reaction, grignard reagent.

Q: Half-reaction E° (V) Br2(l) + 2e-  2Br-(aq) 1.080V Co2+(aq) + 2e-  Co(s) -0.280V Mg2+(aq) + 2e-…

A: Solution: In this question we have to use given reduction potential values to explain the answers.

Q: 2 A mixture is first made of 240 cm3 of a 0.412 mol.dm–3 solution of silver nitrate and y cm3 of a…

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Q: Refer to the structure of 3-methyl-2-butanone pattern for the hydrogens in 3-methyl-2-butanone H₂C-…

A: In the given question we have to find out the splitting pattern for the hydrogen in the given…

Q: What is the mole ratio for O2 gas to water for the balanced equation for the complete combustion of…

A: What is the mole ratio for O2 gas to water for the balanced equation for the complete combustion of…

Q: Calculation of vinegar Sample Volume of diluted vinegar 28.5 mL 2.1 M 47 mL Molar Concentration of…

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Q: An analytical chemist is titrating 109.1 mL of a 0.8800M solution of piperidine (C5H₁NH) with a…

A: Here we  are required to find the pH of the solution.

Q: Suppose a 0.20 Maqueous solution of oxalic acid (H₂C₂O4) is prepared. Calculate the equilibrium…

A: Given data : Concentration = 0.20 M PKa1 = 1.25  ka1 = 10-pka1 = 10-1.25 = 5.623×10-2 Pka2 = 3.81…

Q: Balance the following oxidation–reduction reaction using the half-reaction method.…

A: Given : a redox reaction.  Reaction is balanced under acidic condition.

Q: Draw a structural formula for the more stable carbocation intermediate formed in the reaction shown.…

A: When an asymmetrical alkene reacts with a hydrogen halide, the hydrogen adds to the carbon atom that…

Q: A chemist titrates 250.0 mL of a 0.6994 M hydrobromic acid (HBr) solution with 0.8110 M NaOH…

A: HBr is a strong monoprotic acid. NaOH is also a strong monoacidic base.

Q: Which of the following could be used to complete the following reaction? ol O CH₂CH3MgBr/ether O…

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Q: Draw a stepwise mechanism that shows how all three alcohols are formed from the bicyclic alkene.

A: Given : structure of reactant and products

Q: Which of the following correlations in the qualitative analysis experiment is incorrect? a. CO32- :…

A: Qualitative analysis is that analysis in which a substance is detected for its presence or absence…

Q: The preparations of two aqueous solutions are described in the table below. For each solution, write…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.