A sample of a substance with the empirical formula XBr2 weighs 0.5000 g. When it is dissolved in water and all its bromine is converted to insoluble AgBr by addition of an excess of silver nitrate, the mass of the resulting AgBr is found to be 1.0198 g. The chemical reaction is XBr2 + 2 AgNO3 → 2 AgBr + X(NO3)2 (a) Calculate the molecular mass (that is, formula mass) of XBr2.(b) Calculate the atomic mass of X and give its name andsymbol.

Q: An alloy of iron and carbon was treated with sulfuric acid, in which only iron reacts. 2 Fe(s)+3 H 2…

A: % of Fe in alloy = weight of Fe /weight of alloy x 100

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: To determine the amount of iron in a dietary supplement, a random sample of 15 tablets weighing a…

A: A numerical problem based on quantifying Fe in the given tablet, which is to be accomplished.

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

A:

Q: The calcium content in a 0.4367-g sample of phosphate rock was determined by first dissolving the…

A: Here we have to determine mass percentage of calcium present in 0.4367 gram phosphate rock  if all…

Q: A 7.83-g geological sample, containing the mineral Boulangerite (Pb5Sb4S11) as the only lead-bearing…

A: Mass percentage or percentage by mass : It is the mass of one component(in the substance) in grams…

Q: how many grams of calcium nitrate, Ca(NO 3 ) 2 , are needed to react completely with 45.1 g of…

A: First convert mass into mole by divid6 molar mass  Then Mole-mole realtionship to get mole mole of…

Q: One of the reactions that occurs in a blast furnace, in which iron ore is converted to cast iron, is…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Pure iron, Fe, can be produced from an ore called hematite, Fe, O,, by reaction with carbon at high…

A: Given Reaction: 2Fe2O3 + 3C ---------> 4Fe + 3 CO2  Mass of Iron= 17 tons To Calculate: Mass of…

Q: What is the maximum mass of iron, in grams, that can be obtained from 651 g of iron(III) oxide?

A: Molar mass of any substance is the mass of 1 mole of that substance. If the molar mass of an atom is…

Q: Isobutylene is a hydrocarbon used in the manufacture of synthetic rubber. When 0.847 g of…

A: Empirical formula represents the simplest whole number ratio of the element is the compound.

Q: Consider the reaction: ZnO(s) + H20(1) - Zn(OH)2(aq) Given an initial mass of 19.85 g Zno, an excess…

A: The given reaction is, ZnO (s) + H2O (l) →  Zn(OH)2 (aq) Given that: mass of ZnO = 19.85 g To find…

Q: The aluminum in a 0.805 g sample of an unknown material was precipitated as aluminum hydroxide…

A: Given,Mass of Aluminum = 0.805gMass of Al2O3 = 0.127 g Molar mass of Al2O3 is 101.96g/molMolar mass…

Q: The reaction of silver metal and dilute nitric acid proceeds according the equation below. 3 Ag(s) +…

A: The balanced reaction given is, Given : Moles of Ag taken = 0.15 mol Concentration of HNO3 = 3.0 M…

Q: To a crucible and cover weighing 33.392 g is added a sample of a copper (II) chloride hydrate (CuCl2…

A: Given data, Mass of crucible + cover = 33.392g Mass of crucible + cover + sample = 34.405g Mass of…

Q: 1. A sample of ultrapure silicon was reacted with excess oxidizing yielding SiO₂. After proper…

A: Given : Weight of SiO2 precipitate = 3.1754 g Purity of ultrapure silicon = 99.98%

Q: Write the word equation and chemical equation of the following reactions. 1. Solid metal (K0 and…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: In the laboratory you are given the task of separating Ba2+ and Zn2+ ions in aqueous solution. For…

A:

Q: The balanced equation for the reaction of aluminum metal and chlorine gas is 2AI(s) + 3Cl,(g) →…

A: The limiting reactant is the reactant which is totally consumed after the completion of the…

Q: Apply In an experiment, you combine 83.77 g of iron with an excess of sulfurand then heat the…

A: Given : Mass of iron = 83.77 g Reaction equation is as follows. 2Fe(s) + 3S(s) → Fe2S3(s)

Q: Consider the Haber-Bosch process for the synthesis of ammonia from its elements. Calculate the…

A: Formula For I question; Theoretical yield = Mass of H2Molar mass of H2 x 23 x Molar mass of NH3 For…

Q: 892.1 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen.…

A: The yield of water can be calculated as:-

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: 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: In the laboratory you are given the task of separating Ba2+ and Zn²+. ions in aqueous solution. For…

A: Ionic compounds termed as salts dissolve greely in water. In certain cases, the solubility of a salt…

Q: Question attached

A:

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: Consider the Haber-Bosch process for the synthesis of ammonia from its elements. Calculate the…

A: 1 mol N2 gives 2 mol NH3. 28 g N2 gives 2 mol NH3.

Q: (iii) When 90.00 mL of 0.200 M MnO4¬(aq) was reacted with 200.00 mL of 0.280M H2O2(aq), the amount…

A: The complete balanced reaction for the question is : 2MnO4- + 3H2O2 →2MnO2 + 3O2 + 2OH- + 2H2O…

Q: Phosphoric acid, one of the acids used in some cola drinks, is produced by the reaction of…

A: a) The given compound is phosphorous (V) oxide. This suggests that the oxidation state of…

Q: Potassium acid phthalate, KHC8H4O4 (molar mass = 204.22 g/mol), is used to standardize solutions of…

A: We have to predict the Molarity of the base solution.

Q: A 0.4884 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide…

A: Given : mass of compound = 0.4884 g And mass of AgBr formed = 0.8543 g Molar mass of AgBr = Atomic…

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

A:

Q: When a solution of Cu(II) chloride, CuCl2 , is added to a solution of potassium sulfide, K2S, a…

A: Given that,  Solution of CuCl2  and K2S, when Copper chloride solution is added to potassium sulfide…

Q: 454 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen. The…

A:

Q: Gold can be extracted from gold-bearing ores by treating the ore with sodium cyanide, NaCN, in the…

A: The mass of Au present in 1.00 x 103 kg of ore is calculated as,                       Mole Au that…

Q: h) What is the mass, in grams, of barium sulfide precipitate that is formed from the reaction of…

A: Given, Ba(NO3)2 + FeS → BaS + Fe(NO3)2 Note: 1000 mg = 1 g Mass of iron (II) sulfide {FeS} = 18.2 mg…

Q: The sulfide ore of zinc (ZnS) is reduced to elemental zinc by “roasting” it (heating it in air) to…

A: Given, 3.30 kg pure Zn 5.32 kg ZnS

Q: Phosphoric acid (H,PO,, MM = 98.00 g/mol) can be prepared by treating calcium phosphate (Ca (PO,),…

A:

Q: An iron ore was analyzed by dissolving a 2.9912-g sample in concentrated HCl. The resulting solution…

A: The mass of the pure Fe2O3 is given as 159.69 g/mol The atomic mass of Iron is 55.847 g/mol The…

Q: You were given a 5-gram mixture of sand and salt (sodium chloride). What is the percentage of salt…

A:

Q: The aluminum in a 0.685 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: Mass percentage of a component can be calculated by using the formula :  mass %ge of the component…

Q: Calcium phosphate used in fertilizers can be made in the reaction described by the following…

A: Given, Chemical Reaction : 2H3PO4 + 3Ca(OH)2 ---> Ca3 (PO4)2 + 6 H2O  Molarity of H3PO4 = 5.00 M…

Q: What is the theoretical yield, in grams, of aspirin ( C 9 H 8 O 4 ), which has a molar mass of…

A:

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

A: The balanced reaction taking place is given as (for x = 3), => 2 M (s) + 6 HCl (aq) -------->…

Q: Determine the mass, in grams, of precipitate formed from the reaction of 3.14 moles of XNO3 with…

A: Given reaction:- X N O 3 ( a q ) + N a 2 S ( a q ) → X 2 S ( s ) + N a N O 3 ( a q ) 3.14 moles of…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: CaCO3(s) --> CaO(s)+ CO2(g) Mass of lime stone containing sample = 3.043g CO2 produced = 1.25g

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

A:

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".