Give the oxidation number of chromium in the following:(a) CrO₃(b) Cr₂O₇²⁻(c) Cr₂(SO₄)₃

Q: when 2.876g of a certain metal oxide is roasted in air, 2.368g of metal oxide is formed. if the…

A: In roasting, metal sulfide is converted into metal oxide. When 2.876 g of metal sulfide is roasted…

Q: Calculate the molarity of HCL if you know that (42.5ml) equates to 0.114g of sodium carbonate in a…

A: Formula used is  Molarity(M) = mass of solute divide by volume of solution in litres  M = n/V

Q: Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids,…

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Q: When an aqueous solution of Na3PO4 is added to an aqueous solution of Cd(NO3)2, precipitate forms.…

A: Spectator ions are the ions that exists as product and reactant in a reaction.

Q: A student wants to prepare a solution of chromium(III) nitrate with a known molarity. How many…

A: Given data, Volume of Cr(NO3)3 solution (v) = 500 mL = 0.5 L Concentration of Cr(NO3)3 solution (M)…

Q: What is the net ionic equation for the reaction of aqueous sodium carbonate with aqueous iron(III)…

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Q: What is the net ionic equation? Please also write the state of matter (aq) or (s)

A: The net ionic equation is needed to be provided.

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

A: Oxidation state represent the residual charge on atom in a compound when all other atoms are…

Q: Write the balanced NET ionic equation for the reaction when aqueous (NH4);PO, and aqueous Zn(NO3)2…

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Q: 2. 19.32 mL of 0.500 M NaOH solution is required to exactly neutralize a 10.00 mL sample of vinegar.…

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Q: What is the smallest whole-number coefficient for H₂S when the equation H₂S + MnO₄⁻ → Mn²⁺ + SO₄²⁻…

A: In the above reaction Mn7+ in MnO4- is being reduced to Mn2+ and S2- in H2S is being oxidised to S6+…

Q: How many ions are produced when c6h12o6 dissolves in water?

A: C6H12O6 is glucose which is not an electrolyte. This is when dissolved in the water would lead to no…

Q: The mass percent of acetic acid (CH3COOH) in a bottle of vinegar is 5.45% in water. What is the…

A: Consider the volume of the solution as 1 L (1000 mL).Determine the mass of l L of solution from the…

Q: Bromine (Br2) reacts with sulfurous acid (H2SO3), producing dithionate ions (S206) and bromide ions,…

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Q: Write the balanced NET ionic equation for the reaction when Cr(NO3)3 and Li¿CO3 are mixed in aqueous…

A: The question is based on the concept of chemical reactions. We have to identify the chemical…

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: Some chemical reactants are listed in the table below. Complete the table by filling in the…

A: The oxidation state of an atom is a number which gives us the number of electrons lost or gained (or…

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

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Q: Write the balanced NET ionic equation for the reaction when AgC₂H₃O₂ and Ni(ClO₄)₂ are mixed in…

A: Balanced molecular reaction is given by,

Q: How many total moles of ions are released when 1.77 mol of Rb2SO4 dissolves completely in water?

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Q: What is the oxidation state of N in NO?

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Q: If 38.5 mL of lead(II) nitrate solution reacts completely with excess sodium iodide solution to…

A: Given information: Volume of solution = 38.5 mL Mass of precipitate = 0.628 g Atomic Mass : Pb-207,…

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

A: Applying concept of oxidation state.

Q: If 6.73 g of Na2CO3 is dissolved in enough water to make 250. mL of solution, what is the molar…

A: The calculations for the molarity of sodium carbonate are shown below: =

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

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Q: 7. The major component of Gasoline is Octane (C,H,9) which is mixed with oxygen in the cylinders of…

A: when compound is burned with help of oxygen and form carbon dioxide and water and amount of energy.

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

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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: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,…

A: Given: Hardness=175 mg CaCO3/L

Q: In the molecule HClO4, what is the total of the oxidation numbers of the one hydrogen and four…

A: (a) According to the electroneutrality principle, in a neutral compound                         "The…

Q: _(NH4)2SO4( ) + _PBC12( _PbSO4( ) + _NH4C1 (

A: To balance the reaction , there must be equal number of ions or atoms in both side of the chemical…

Q: Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and…

A: The reaction is  K2S(aq) + Fe(NO3)2 (aq)  --------> FeS (s) + 2KNO3 (aq) hence the complete ionic…

Q: A sample of 0.3291 g of an ionic compound containing the bromide ion (Br) is dissolved in water and…

A: Given Mass of sample = 0.3291 g Mass of AgBr = 0.6905 g Moles of AgBr = mass of AgBrmolar mass of…

Q: Balance the following equation and charges, Na + H2O--> Na^+ + H2 + OH^-

A: Given: Reaction of sodium with water  To find: Balance it and balance the charges as well Solution:…

Q: Write the balanced NET ionic equation for the reaction when ZnI₂ and Pb(ClO₄)₂ are mixed in aqueous…

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Q: What is the coefficient of Mn2+ when the reaction, Mn2+ + MnO4- yields MnO2 is balanced in an…

A: The oxidation half-reaction and reduction half-reaction for the given reaction is shown in equation…

Q: Write the balanced NET ionic equation for the reaction when AgC₂H₃O₂ and Ni(ClO₄)₂ are mixed in…

A: Solubility of a compound is defined as the minimum amount  of solute that can be dissolved in a…

Q: Thyroxine (C₁₅H₁₁I₄NO₄) is a hormone synthesized by thethyroid gland and used to control many…

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Q: What is the oxidation state of Co in: Na4[Co(CN),] ?

A: Oxidation state of Co in Na4[Co(CN)6]

Q: Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids,…

A: The oxidation number is the charge present on the atom in the given compounds. The oxidation number…

Q: 3. Which atoms in the following reaction undergo changes in oxidation state? oxidized and which one…

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Q: b) i) Calculate the number of moles of sodium ions In an aqueous solution of 2.63 g of Na,Co, ii)…

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

Q: (a) How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto…

A: Given area = 0.32 m2 density = 7.2 g/cm3 atomic weight = 52 g/mol thickness = 0.25 mm

Q: when 2.876 g of a certain metal sulfide is roasted in air, 2.368 g of metal oxide is formed. if the…

A: Generally the metal sulphide is burned and roasted in presence of air this process is called as a…

Q: Give the net ionic equation for the reaction that occurs when aqueous solutions of K2S and Fe(NO3)2…

A: The species which are present in the solid or the liquid state will remain unchanged. The equation…

Q: Complete and balance the following reaction, then give the product side of the balanced equation.…

A: Cu + ZnSO4 → Zn + CuSO4

Q: Calcium cyclamate Ca(C6H11NHSO3)2 is an artificial sweetener used in many countries around the world…

A: The given compound is Calcium cyclamate Ca (C6H11NHSO3)2 To find: The balanced equation for the…

Q: What is the smallest whole-number coefficient for H2S when the equation H2S + MnO4¯ → Mn²* + SO,²¯…

A: Step : 1             Find the coefficient for H2S.

Q: What is the concentration of NO3- ions in a solution prepared by dissolving 30.0 g of Ca(NO3)2 in…

A: Given,  mass of Ca(NO3)2 = 30.0 g Volume of solution = 300 ml = 0.3 L Molar mass of Ca(NO3)2 =…

Q: What is the oxidation state of iron (Fe) in the reactant Fe(s)?   What is the oxidation state of…

A: The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation…