A sample of 0.3220 g of an ionic compound containing the bromide ion (Br−) is dissolved in water and treated with an excess of AgNO3. If the mass of the AgBr precipitate that forms is 0.6964 g, what is the percent by mass of Br in the original compound? (At. Mass: Br-80,Ag-108,N-14,O-16)

Q: The phosphorus in a 0.2222-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12Mo O3.…

A: P2O5 = 2 (NH4)3PO4 • 12Mo O3 = 24 PbMoO4   Moles of PbMoO4 are, Moles = mass ÷ molar mass Moles =…

Q: What mass of NaOH can be formed from 15 liters of 0.35M NaCl? What is the mass of the Chlorine…

A: The SI unit for the amount of substance present in a given compound is its number of moles. 1 mole…

Q: Potassium cyanide reacts with acids to produce hydrogen cyanide gas via the following reaction:…

A:

Q: Will a precipitate form if solutions of the soluble saltsPb(NO3)2 and KI are mixed?

A: The solutions of Pb(NO3)2 and KI leads to the formation of solution of potassium nitrate KNO3 and…

Q: Write balanced chemical equations corresponding to each ofthe following descriptions: (a) Solid…

A: a)  CaC2 s+H2O→CaOH2 aq+C2H2gb) KCLO3 s →KCLs+O2g

Q: A sample of 0.3207 g of an ionic compound containing the bromide ion (Br) is dissolved in water and…

A: Number of moles is calculated by dividing given mass with molecular mass.

Q: Suppose a student starts with 2.4185 g of a sand mixture and separates the components into 1.3012 g…

A: The mass percentage is the simplest way of representing the mass of the components present in the…

Q: A sample of 0.3233 g of an ionic compound containing the bromide ion (Br¯) is dissolved in water and…

A: Given information: Mass of sample = 0.3233 g Mass of AgBr = 0.7017 g

Q: What mass, in grams, of sodium carbonate is required for complete reaction wit 8.35g of nitric acid…

A: In Balanced chemical equation number of atoms of each species are equal on both reactant and…

Q: For the reaction З КОН + Н, РО, — К, РО, + 3Н,О 4 4 how many grams of potassium phosphate, K3PO4,…

A: We have given the balance chemical equation as follow      3KOH  +  H3PO4   →  K3PO4  + 3H2O We have…

Q: Consider a solution prepared by combining 45.0 g of BaCl2 with enough water to prepare a 750.0 mL of…

A: The number of molecules of BaCl2 is calculated as shown below where 45.0 g is the given mass, 208.23…

Q: A 0.6247g sample of an ionic compound containing the bromide ion (Br-) is dissolved in water and…

A: Bromide ion reacts with silver nitrate and silver bromide is precipitated during this reaction.  The…

Q: A 0.5620-g sample of an ionic compound containing the bromide ion (Br−) is dissolved in water and…

A:

Q: A student has samples of two pure compounds, XC1O, and ZC1O3, which contain unknown alkali metals X…

A: Given: Compounds of two alkali metals XClO3 and ZClO3. And the compounds are heated to remove the…

Q: How many moles of H2 and N2 can be formed by the decomposition of 0.185 mol of ammonia, NH3?

A: The decomposition reaction of ammonia that will take place is  2 NH3 ------> N2 + 3 H2

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: A 2.5624-g sample of a pure solid alkali metal chloride is dissolved in water and treated with…

A:

Q: The single largest use of phosphoric acid is in the production of fertilizer. How many grams of…

A: We have given that  The single largest use of phosphoric acid is in the production of fertilizer.…

Q: Enter your answer in the provided box. A sample of 0.8360 g of an unknown compound containing barium…

A: Mass of baso4 ppt=0.7737g Total mass of compound= 0.8360g

Q: how would i determine the concentration of carbonate anion (CO32-) in g per L of a solution if there…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCl. What…

A: Given: Total mass of alloy = 12.3 g. And moles of H2 produced = 1.66 mol. Assuming that there are…

Q: Iron forms a sulfide with the approximate formula Fe,Se. Assume that the oxidation state of sulfur…

A: Given that,  An iron sulfide compound with molecular formula = Fe7S8 oxidation state of sulfur = -2…

Q: Q2 :- Calculate the percentage of p in the sample of a 0.703 g weight, produced 0.223 g of Mg.P:O7…

A:

Q: A student was given a sample of hydrated Na2CrO4 (molar mass of anhydrous Na2CrO4: 162.0 g/mol). She…

A:

Q: Enter your answer in the provided box. A sample of 0.7560 g of an unknown compound containing barium…

A: The balanced chemical equation,  Ba²⁺(aq) + Na2SO4(aq) --> BaSO₄(s) + 2Na+(aq) Molar mass of Ba²⁺…

Q: For the next 3 items: A 0.498 g sample contains 26.0% aluminum triiodide, Alls, (MW = 407.695) by…

A: when two soluble salt react it would result in the formation of insoluble salt which does not…

Q: A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCI. What…

A: Given, Mass of the sample = 12.3 g  Mass of H2 gas produced = 1.66 mole  What is the percentage of…

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca₃(PO₄)₂₍s₎ +…

A:

Q: of Br2, in grams, is required for complete reaction with 9.56 g of A g Br2 of white, solid Al,Bre is…

A: Given,  Balanced chemical reaction,  2Al + 3Br2 ----> Al2Br3 Mass of Al = 9.56 g Molar mass of Al…

Q: In the preparation of Alum, we used (3 mole) reacted with (25 ml) of (1 M) KOH solution and the…

A: Given that -  Moles of aluminum, Al = 3 mole  Volume of KOH used K=39, Al-27, S-32, H=1= 25 mL…

Q: Write balanced chemical equations corresponding to each ofthe following descriptions: (a) Solid…

A: Balanced reaction for the following: (A) CaC2 (s) + 2H20(l) → Ca(OH)2(aq) + C2H2(g) (B) 2KCIO3 (s) →…

Q: . Aluminum metal is produced by passing an electric current through a solution of aluminum oxide…

A:

Q: 5.18 g of ionic compound containing Cl- dissolved in water and treated with pb+2 to form 6.78g pbC12…

A: To calculate the percent of chloride ion in the given sample first of all we calculate the mass of…

Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A:

Q: A mixture containing BaO and CaO weighs 1.85g. The oxides are converted to the corresponding…

A: Weight of the original mixture ( BaO + CaO ) = 1.85 g. let mole of BaO in the original mixture =   x…

Q: A hydrate of iron (II) sulphate, FESO, xH,0 is 20.0% iron by mass. A) What is the chemical formula…

A: The compound given is FeSO4·xH2O. And mass percent of iron i.e. Fe in compound = 20.0 %. Assuming…

Q: Water "softeners" remove metal ions such as Ca2+ and Fe3+ by replacing them with enough Na+ ions to…

A: Ca2+ and Fe3+ are cations with 2 positive and 3 positive charge respectively whereas Na+ ion has one…

Q: An acid, HEI, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A: Percent by weight or %(w/w) :-  The mass of solute present in 100 grams of solution is defined as…

Q: Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution…

A: Determine number of moles of I2:

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

Q: A 0.772 g sample of a mixture containing only NaBr and CaBr2 is dissolved in water. An excess of an…

A:

Q: (8) Per chloric acid (0.200m)(0.125 L) Magnesium carbonate -7 Magnesium chlurate + CO,+ HaO 35.0g…

A: Given: Molarity of perchloric acid=0.200 M Volume of perchloric acid=0.125 L Mass of magnesium…

Q: Write a balanced chemical equation for the reaction thatoccurs when (a) Mg(s) reacts with Cl2(g);…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A: Given, Mass percentage of acid, HEI = 20.09%  Atomic Mass: H: 1.00784 g/mol O: 15.999 g/mol El:…

Q: For the following reaction 145 g perchloric acid or allowed to react with 27.9 g of tetraphosphorus…

A: Given that, 145 g perchloric acid (HClO4) undergoes reaction with 27.9 g of tetraphosphorus…

Q: Barium can be analyzed for by precipitating it as BaSO4 and mass the precipitate. When a 0.2000 g…

A: Mass of sample = 0.2 g Mass of BaSO4 = 0.121 g

Q: A sample of 0.7960 g of an unknown compound containing barium ions (Ba2+) is dissolved in water and…

A:

Q: A sample of 0.6760 g of an unknown compound containing barium ions (Ba) is dissolved in water and…

A: Introduction The mass percentage of any particular compound can be calculated by simply applying the…

Q: When aqueous solutions of Na3PO4 and CoCl2 are mixed, a precipitate will form. what are the…

A: Spectator ion is an ion that exists as a reactant and a product both in a chemical equation.

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

A: The decomposition reaction of CaCO3 can be written as, => CaCO3 (s) ---------> CaO (s) + CO2…

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".