Given the reaction:    Fe+2 + Cr2O7 -2  → Fe+3 + Cr+3  How many mole/s of Fe+2 is/are used involved in a balanced reaction ?     7     5     3     4     6

Q: Pure copper may be produced by the reaction of copper(I) sulfide with oxygen gas as follows: Cu2…

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Q: Which substance is the oxidizing agent and which is the reducing agent? 3NO2(g) + H₂O → NO(g) + 2H+…

A: Oxidation reduction reaction (Redox reaction) It can be defined as the chemical reaction in which…

Q: Consider the following reaction: 2C2H6 (g) + 7O2 (g) → 4CO2 (g) + 6H2O (g) Which substance is…

A: The substance whose oxidation number increases is oxidized while the one whose oxidation number…

Q: ClO3- + 3Cu+ 6H+3Cu2+ + Cl-+ 3H2O In the above redox reaction, use oxidation numbers to identify…

A: Redox reaction :- A reaction which contains both reduction and oxidation is referred as redox…

Q: The following reaction helped shape the earth's crust to form the mineral called iron(I) silicate.…

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Q: 6. Balance the equation given below: S2CB(A) + NH3(8)→ S4N4(s) + Sg(s) + NH4CI(S)

A: The chemical equation in which all the individual atoms in the product side and reactant side are…

Q: 3Br₂ + 2PH3+ 6OH¯―2P + 6Br²+ 6H₂O In the above redox reaction, use oxidation numbers to identify the…

A: A reaction in which oxidation & reduction occurs simultaneously are called Redox…

Q: What type of reaction is this? 2K(s) + Cl₂(g) → 2KCl(s)

A: A reaction in which two or more substances chemically combine together and results in the formation…

Q: Complete the balanced molecular chemical equation for the decomposition reaction that takes place as…

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Q: Balance the following chemical equation. C2H3CI + O2→CO2 + H20 + HCI Assume the coefficient of HCI…

A: The balanced chemical equation of chloroethene reacts with oxygen to give carbon dioxide, water, and…

Q: Balance the chemical equation. B₂S3 + H₂O →H3BO3 + H₂S Assume the coefficient of H₂S is 3. What is…

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Q: Use Equation 3 to calculate the number of moles of generated CO2. NaHCO3(5) + CHзСООНag) NaCHзСОО…

A: To calculate moles of CO2 you need to use mole ratio between reactant and product .

Q: Determine limiting reagent for this reaction Mg(s) + 2 HCI(ag) → MgCl2(ag) + H2(g) >

A: 1 mol of Mg react with 2 moles of HCl to produce 1 mol of MgCl2 and 1 mol of H2 .

Q: Classify the following reaction: Mg(OH),(s) +H¸SO,(aq) → 2H̟O(1) + M9SO,(aq) A) synthesis B)…

A: Mg(OH)2 is a base. And H2SO4 is acid. This reaction is also known as acid-base neutralisation…

Q: 8Fe + S8 → 8FeS How many grams of iron are needed to react with 3.00 g of sulfur?

A: Given weight of sulfur is 3 gram

Q: Al' ( ) + HCl ( ) → AlCl3 ( ) + H₂() 9. In the above reaction please list the states of each of the…

A: Balanced chemical equation can be define as the reaction in which number of atoms of all the…

Q: The balanced equation for the decomposition of potassium chlorate is shown below. When carried out…

A: Mass of KClO3 consume in reaction = 0.0039 kg = 3.9 g Mass of KCl produced in reaction = 1.2 g Molar…

Q: What type of reaction is the following? Br₂(g) + Nal(aq) → 2NaBr(aq) + 1₂(g) Combination…

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Q: This equation is not balanced. What is the sum of the molar coefficient for the balanced equation?…

A: Write sum of molar coefficient for the balanced equation---

Q: Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox")…

A: Applying oxidation and reduction concept.

Q: What type of reaction is this? 2K(s) + Cl:(g) → 2KCI(s) * Synthesis Decomposition Combustion Single…

A: A reaction takes place the starting compounds react under suitable conditions and produce new…

Q: Balance the following chemical equation. C₂H₂CI+O₂ CO₂ + H₂O + HCI Assume the coefficient of HCI is…

A: Chemical reactions describe the transformation of reactants into products, and they are represented…

Q: Decide whether a chemical reaction happens in either of the following situations. If a reaction does…

A: Situation(a):  Chemical reaction will occur When lead metal strip is put into a beaker of 0.098 M…

Q: The thermite reaction is performed using 8.6 g Fe 2O 3 and 1.8 g powdered Al metal. Which reactant…

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Q: 4Cr + 6NO2 + 9H204Cr(OH)3 + 3N2O+ 6OH- In the above redox reaction, use oxidation numbers to…

A: A reaction in which oxidation & reduction occurs simultaneously are called Redox…

Q: Write the balanced NET ionic equation for the reaction when aqueous BaCl2 and aqueous (NH4)2S04 are…

A: Given reaction,     BaCl2(aq) + (NH4)2SO4(aq)  →  NH4Cl(aq) + BaSO4(s)

Q: Balance the following chemical equation and determine the number of moles of Fe(s) produced when 1…

A: In a balanced chemical reaction, number of atoms on both the sides of equation should be equal.The…

Q: Fe+2 + Cr2O7 -2  → Fe+3 + Cr+3   How many mole/s of H2O molecules is/are uproduced in a balanced…

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Q: A 0.6214-g portion of manganese dioxide was added to an acidic solution in which 1.1444 9 of a…

A: Mass of MnO2 sample added to acidic solution = 0.6214 g                                      Mass…

Q: For the oxidation–reduction reaction equation   4Al+3O2⟶2Al2O3   indicate how many electrons are…

A: For the oxidation-reduction reaction equation: 4Al+3O2 ⟶ 2Al2O3 how many electrons are transferred…

Q: A solution of iron(II) sulfate was prepared by dissolving 10.00 g of FeSO4•7H2O (FW = 277.9) in…

A: Given data: Mass of  FeSO4•7H2O dissolved in water = 10.00 g, Volume of iron(II) sulfate solution =…

Q: Balance the chemical equation. PbN+CrMn₂ Og →Pb3O4 + Cr₂O3 + MnO₂ + NO Assume the coefficient of NO…

A: Recall the given reaction,                       the coefficient of  is 90We have to balance the…

Q: how many electrons are transferred when 27 g of iron react?

A: The given balanced reaction is  4Fe(s) + 3O2(g) = 2Fe2O3(s) The oxidation state of Fe in reactant…

Q: Balance the following redox reaction _H3PO2 (aq) + _Cr2O72- (aq) + _H+ (aq) → _H3PO4 (aq) + _Cr3+…

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Q: Nitric acid is produced in the following steps: 4NH3(g) + 5O2(g) => 4NO(g) + 6H2O(l)  2NO(g) +…

A: On calculating the oxidation numbers of the reactants according to the reaction

Q: 16K (s) + S₂ (s) 8K₂S (s) - reaction HBr(aq) + NaOH(aq) → NaBr(aq) + H,O() CuSO (aq) + Zn CrO₂ (aq)…

A: In a Rxn , When two or more substances combine to form a new substance then this type of reaction is…

Q: Complete and balance the following redox reaction in basic solution CIO2(g) →CIO₂ (aq) + CIO3(aq)

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Q: For the synthesis of ammonia from its elements, 3 H2(g) + N2(g) 2 2 NH;(g)

A: Equation used to calculate the standard Gibbs free energy change of the reaction is:…