In the reaction Na2S(aq) + 2 HCl(aq)  →  2 NaCl(aq) + H2S(g) the resulting solution weighs less than the sum of the original solutions because:     the chloride ion is heavier than the sulfide ion     some of the products escaped as a gas      the weights of solutions are not additive     some of the iron gets changed to hydrogen     this reaction is an exception to the Law of Conservation of Mass

Q: A solution of sodium hydroxide is standardized to a concentration of 0.600 M NaOH. If 20.05 mL of…

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Q: To extract gold from its ore, the ore is treated with sodiumcyanide solution in the presence of…

A: The molecular weight or molar mass of any substance is the sum of the mass of each element. If the…

Q: Calculate the mass of silver nitrate, AgNO3 (aq) , that must react with solid copper to provide…

A: Molar mass of copper nitrate = 187.56 gmol-1 Molar mass of AgNO3 = 2× 169.87 = 340gmol-1

Q: When solutions of silver nitrate and magnesium chloride are mixed, silver chloride precipitates out…

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Q: Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching…

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Q: To measure the amount of chlorine in a well-boring fluid, an analytical chemist adds 0.130M silver…

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Q: In the precipitation reaction AgNO3 (aq) + KCI (aq) → AgCl (s) + KNO3 (aq), the precipitate is KNO3…

A: When two aqueous solutions react, they sometimes form solids in the solution. The solid is called a…

Q: . Solid sodium fluoride is slowly added to 125 mL of a 0.111 M calcium bromide solution until the…

A: The solubility product of salt is a constant at a given temperature irrespective of the source from…

Q: The mass of a solid piece of iron Fe(s) should be determined by allowing it to react with a solution…

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Q: To measure the amount of chlorine in a well-boring fluid, an analytical chemist adds 0.5000M silver…

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Q: Which of the following compounds will have the state symbol (aq) when mixed with water? Remember…

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Q: Consider the reaction when aqueous solutions of magnesium sulfate and lead(II) nitrate are combined.…

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Q: Consider the following chemical reaction. 3 Zn(C:H:O2)>(aq) + 2 NasPO:(aq) –→ 6 NaCaHsOz(aq) +…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Write the formulas for the given reactants, predict the products, and balance the entire…

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Q: Given the reactant side of the total ionic equation for the neutralization reaction of lithium…

A: The molecular reaction of lithium hydroxide (LiOH) and hydrochloric acid (HCl) is as follows:…

Q: Many mining operations produce tailings that can be oxidized to form acids, including sulfuric acid.…

A: Given, 4CuFeS2(s)+17O2(g) +10H2O(I)→4Fe(OH)3(s)+4CuSO4(aq)+4H2SO4(aq)mass of sample CuFeS2(s) = 1.67…

Q: To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1700M…

A: The reaction taking place is given as, => Given: Concentration of NaOH taken = 0.1700 M Mass of…

Q: To measure the amount of chlorine in a well-boring fluid, an analytical chemist adds 0.180M silver…

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Q: In the following reaction, what mass of copper(Il) hydroxide is produced by mixing 8.06 mL of a…

A: Recall the given reaction ,  Cu(NO3)2 (aq)  +  2 NaOH (aq)  ------->  Cu(OH)2 (s)  +  2 NaNO3…

Q: A solution is prepared by dissolving 3.0 g iron(II) chloride (MW=126.8 g/mol) with 75.0 mL of water.…

A: Solution Molar concentration is that the most convenient technique of expressing the concentration…

Q: When potassium cyanide (KCN) reacts with hydrochloric acid, a poisonous gas of hydrogen cyanide is…

A: Given      KCN          +           HCl      →  KCl     +   HCN    mass of KCN   = 0.140 gram…

Q: Potassium hydrogen phthalate, KHP, is often used as a primary standard for the standardization of…

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Q: If 30.0 g of NaOH is added to 0.800 L of 1.00 M Zn(NO₃)₂, what mass in grams of Zn(OH)₂ will be…

A: The mass of NaOH (sodium hydroxide) = 30.0 g The volume of Zn(NO3)2 (zinc nitrate) = 0.800 L The…

Q: To test the stoichiometry of a reaction, a student placed a copper wire into a solution of silver…

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

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Given data,Concentration of AgNO3=67.0mMMass of AgCl formed=5.6mgVolume of sample=200mLWe know, 1 L…

Q: Consider the following chemical reaction. 3 Zn(C:H:O:):(aq) + 2 Na:PO:(aq) → 6 NaC:H:O:(aq) +…

A: Given: Mass (g) of zinc acetate = 20.5 g The given reaction shows that: 3 moles zinc acetate = 1…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Balanced equation is : MnO2(s)+4HCl(aq)--------------> MnCl2(aq)+2H2O(l)+Cl2(g) Chlorine is at,…

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Q: if 30.0 g of NaOH is added to  0.800L of 1.00M Zn(NO3)2, what is the mass in grams of Zn(OH)2 will…

A: The balanced equation for the given precipitation reaction is as follows.…

Q: CaCO3 + HCl →CO2 + CaCl2 + H2O Suppose you collect a 5.00 g sample of impure limestone and want to…

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Q: In the precipitation reaction AgNO3 (aq) + KCI (aq) O AgCl O KCI O KNO3 O AgNO3 AgCl (s) + KNO3…

A: A precipitation reaction is a chemical reaction in which two solutions combine to form insoluble…

Q: A chemistry student weighs out 0.212 g of lactic acid (HC,H,03) into a 250. mL volumetric flask and…

A: Given, mass of lactic acid = 0.212 g            volume of solution  250. mL            molarity of…

Q: A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric…

A: Given: Sulfuric Acid is limiting reagent, 39.5 grams of barium sulfate are produced. Molar mass of…

Q: Some metals will react with hydrochloric acid to liberate hydrogen gas. The general equation for…

A: Balanced chemical reaction is a reaction in which the atom of an individual element present on…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Given,  Volume of the sample = 200 mL  Chemical reaction is : CdCl2 (aq) + 2AgNO3 (aq) -------->…

Q: A volume of 10 mL of an unknown hydrochloric acid sample was diluted to 100 mL. The diluted solution…

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Q: To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1700M…

A: Given data,Molarity of NaOH=0.1700 MMass of sample=23.00 gMass od Ni(OH)2 produced=0.30 g

Q: The sulfuric acid reacts with the copper(II) carbonate to produce a blue solution of copper(II)…

A: The question is based on the concept of solutions. we have to calculate the original concentration…

Q: Write the balanced NET ionic equation for the reaction when aqueous aluminum nitrate and aqueous…

A: To write net ionic equations we follow these rules : 1) Write the balanced molecular equation with…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: The question is based on the concept of solutions. we have to calculate concentration of Nickel…

Q: Many mining operations produce tailings that can be oxidized to form acids, including sulfuric acid.…

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Q: A student is given the task of determining the concentration of a solution of hydrochloric acid.…

A: In the titration of Ba(OH)2 Vs HCl , the chemical equation can be written as  Ba(OH)2 + 2HCl =BaCl2…

Q: What mass of oxalic acid dihydate, H2C2O4•2H2O, is needed to make a 0.498 M solution of oxalic acid…

A: Molarity of a solution is defined as the number of moles of solute present in one liter solution. It…

Q: A chemist carries out an experiment to determine the number of moles of Cl– ions in a 1 L sample of…

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Q: Lead ions can be precipitated from aqueous solutions by the addition of aqueous iodide: Pb2+ (aq) +…

A: The equation is,

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

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Q: 1.58g of magnesium hydrogencarbonate was added to a 1.68 mol/L solution of acetic acid, CH3COOH in…

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Q: Zinc and sodium metal each react with sulfuric acid according to the following equations. Zn(s) + H,…

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Q: . When aqueous sodium phosphate, Na3PO4, was adde to aqueous sodium chloride,CaCl2, calcium…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Copper reacts with nitric acid according to the reaction 3 Cu (s) + 8 HNO3 (aq) 3 Cu(NO3)2 (aq) + 2…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".