Which element is oxidized in the following reaction? Cr2O72–(aq) + 6 I–(aq) + 14 H+(aq) → 2 Cr3+(aq) + 3 I2(s) + 7 H2O(l) Group of answer choices None of these. This is not a redox reaction Cr I O H

Q: 2. A 0.6447-g portion of manganese dioxide was added to an acidic solution in which 1.1402 g of a…

A: Answer :-  Mass Percent Of AlCl3 = 26.24% Mass percent of Aluminum chloride, AlCl3 in the sample =…

Q: The average human body contains 5.90 L L of blood with a Fe2+ F e 2 + concentration of 2.90×10−5 M M…

A: Given: Volume of blood = 5.90 L Molarity = Volume  of NaCN = 6.00 mL Concentration of NaCN = 20.0…

Q: For the species given below, give the oxidation states of the BOLD underlined element. a) Mg3N2…

A: NOTE: In part b, it will be Li2O and not LiO. Hence I'm taking correct formula. The compounds given…

Q: Consider the following reaction: Zn(s) + CuSO4(aq)  ZnSO4(aq) + Cu(s) Which of the following…

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Q: 27. The balanced equation for the reaction of metallic iron with O2 gas to pr oxide is shown below.…

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Q: If you complete and balance the following equation in acidic solution Mn2+1aq2 + NaBiO31s2 ¡ Bi…

A: Concept introduction: Redox reaction is the reaction in which oxidation and reduction take places…

Q: 1. As(III) can be determined gravimetrically as As2S3. The weight of As2S3 obtained from a 0.5000 g…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: What is the oxidizing agent in the reaction Zn + 2 H* → Zn²* + H,?

A: Given :-  Zn + 2H+ ----> Zn2+ + H2  To identify :-  Oxidizing agent in the above reaction

Q: AsO43+3 Ag+= Ag3AsO4 (0) The arsenate is converted into a solid (Ag3AsO4 (s)). If the mass of solid…

A: Given,

Q: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric…

A: Reaction: Sn + 2HNO3 → H2SnO3 + 2NO3 mass of tin = 0.4909 g molar mass of tin oxide  = 150.69 g/mol…

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Q: LI3OCI (a solid electrolyte in lithium ion batteries) can be prepared as shown below. LICI 2 LİOH…

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Q: The determination of the impurity of iodides in potassium bromide is carried out: A) Reaction with…

A: Qualitative analysis. Solved in step 2.

Q: H2(g) (b) NaCIO3(s) , (c) Ba(s) + H2O(1) 4.110 Predict the product(s) and write a balanced equation…

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Q: 4. An alloy of solder is tin and lead. Calculate the number of moles of each metal that are pres-…

A: Given that an alloy of solder is Tin(Sn) and Lead(Pb) .  Percentage amount of Sn present in alloy =…

Q: balance the equation: _____Na2SO3 (aq) + _____S8 (s) --> _____Na2S2O3 (aq)

A: A balanced chemical equation or reaction is the one in which the number of atoms for each element in…

Q: The unbalance equation for the reaction between bromine, Br2(aq), and iodate ion, IO3-(aq), in…

A: The reaction given is, => Br2 + IO3- → Br- + IO4-

Q: Which of the following compounds could be used as reactants to prepare copper(II) carbonate? none…

A: CuCl2 (aq) + (NH4)2CO3 (aq) ---> 2NH4Cl (aq) + CuCO3 (s)  Therefore, As we can clearly see that,…

Q: If 15 g of copper metal was added to an aqueous solution containing 6.0 moles of HNO3, how many…

A: The chemical reaction is: 3Cu (s) + 8HNO3 (aq) →2NO (g) + 3Cu(NO3)2 (aq) + 4H2O(l)

Q: 36. Balance the following equations by balancing the ions: a. Cr(NO3), + KOH → KNO; + Cr(OH), b.…

A: Here we have to write the balanced net ionic equation.

Q: Complete and balance the following equations: (a) NaOCH3(8) + H2O(I) (b) CuO(s) + HNO;(aq) (c)…

A: The complete balanced chemical equation for the given reactions are:

Q: When the following skeletal equation is balanced under basic conditions, what are the coefficients…

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Q: The aluminium in a 1.2 g sample of impure NH4Al (SO4)2 was precipitated as hydrous Al2O3. The…

A: The number of moles is defined as the ratio of the mass of a substance to its molar mass. Number of…

Q: 1. H2SO4. The resulting solution contained excess acid and required 15.85 mL of 0.09850 M NaOH for…

A: The balanced equations are   CaCO3 + H2SO4 ----------> CaSO4 + CO2 + H2O    H2SO4 + 2 NaOH…

Q: Which one of the following statements is correct about the reaction below? Mg(s) + 2 HCI(aq) →…

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Q: 6NH2OH + 2Bi2Bi(OH)3 + 3N2H4 In the above reaction, what is the oxidation state change of…

A: The oxidation state (OS) of an element corresponds to the number of electrons, e-, that an atom…

Q: Complete the following reactions below. If no reaction occurred, write NR. Zn(s) + MgSO4(aq) –>…

A: The chemical reaction is the reaction in which reactants are converted into products. Chemical…

Q: A sample of soda ash (impure Na2CO3) is titrated with 0.5000 N H2SO4. If the sample weighs 1.1000 g…

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Q: In the reaction shown below, the species being oxidized is and the species being reduced is NO, (aq)…

A: The species whose reduction occurs is reduced species and whose oxidation occur is oxidised species.…

Q: Which one of the following statements is correct about the reaction below? Mg(s) + 2 HCI(aq) →…

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Q: A sample of calcium weighing 2g. The calcium was precipitated as calcium oxalate, then it was…

A: Given that,  Weight of a sample of calcium Ws= 2 g Weight of empty crucible = 2.5 g Weight of…

Q: Complete the following decomposition reaction: (a) Na,CO3(s) + H,Ou) (b) PBSO4(s) +H2O¶ (c)…

A: A decomposition reaction is the one in which a species gets dissociated into more than one. A simple…

Q: Pb(NO3)2(aq) + Na2CrO4(aq) = 1. what is the balanced equation 2. what is the ionic equation 3.…

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Q: Express 1:690 as a percentage strength. 0.14% O 0.15% O 0.144% O 0.149%

A:

Q: In the following reaction, which element in what species is oxidized? Au(NO3)3 (aq) +3 Li(s)→ Au(s)…

A: We have to predict the element and species.

Q: In the reaction: 2NO2 + Cu2+ + 2H20 -> 2HNO3 + Cu + 2H* Which of the following statements is…

A: Identify oxidizing and reducing agents --

Q: Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical…

A: A balanced chemical equation is an equation which contains same elements in same number on both the…

Q: Which of the following is false regarding the reaction of 130.8 g of Zn with a sufficient amount of…

A: We first have to balance the reaction. Since HCl is given in sufficient amount so limiting reagent…

Q: 19. Sodium thiosulfate (Na,S2O3, molar mass = 158.2 g/mol) is used in the development of…

A: Given that -  Mass of sodium thiosulfate sample = 3.232 g  Molarity of iodine Solution = 0.246 M…

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Q: - A group of students performed electrolysis of the copper sulfate solution by using copper…

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Q: Cu(OH)2+2Ag = Ag2O+Cu+H20 Name of oxidized element Name of oxidizing agent Name of element reduced…

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Q: What is the oxidation state of the boldfaced element in (a) P2O5, (b) NaH, (c) Cr2O72-, (d) SnBr4,…

A: A .   P2O5 Let the oxidation state of P = x           oxidation state of O = -2            P2O5…

Q: For the following equation, which atom is the oxidizing agent? 2 F e ( s ) + 3 C l 2 ( g ) → 2 F e…

A: Oxidation: if there is increase in oxidation state from reactant to product then that particular…

Q: 6. Under suitable conditions, thiourea, CS(NH2)2, is oxidized to sulfate by solutions of potassium…

A: we establish the relation between the  mole  of reactant and mole of product

Q: Dichromate reacts with aqueous iron (II) ion in acidic solution according to the balanced equation:…

A: During the titration, the moles of species K2Cr2O7 and FeSO4 is equivalent then this point will be…

Q: Assuming a 100% yield, 1.00 gram of aluminum will produce how many grams of potassium aluminum…

A: Number of moles of Al reacted = given mass / molar mass = 1 g / 26.982 g/mole = 0.037 mole

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A: Percentage by mass of an element in an alloy can be calculated as the mass of that element in an…