To determine the amount of iron in a dietary supplement, a random sample of 15 tablets weighing a total of 20.505 g was ground into a fine powder. A 3.116-g sample of the powdered tablets was dissolved and treated to precipitate the iron as Fe(OH)a. The precipitate was collected, rinsed, and ignited to a constant weight as Fe,O3, yielding 0.355 g. Report the iron content of the dietary supplement as g FESO, 7H,O per tablet.

Q: A 21.25g mixture of the solid salts, sodium chloride and lead (11) nitrate , is added to distilled…

A:

Q: A 0.4567 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride…

A: Mass percentage of an element is the mass of that element divided by the total mass of the compound…

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: In the laboratory you are given the task of separating Pb²* and Fe2* ions in aqueous solution.

A:

Q: The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by…

A: Hello. Since the question contains more than three sub-parts, the first three subparts shall be only…

Q: A small iron pan was analyzed by dissolving a 11.1321 g sample in HCl. The resulting solution was…

A: Given, mass of Fe3O4 = 5.1231 g molar mass of Fe3O4 = 231.533 g/mol !! Calculate the moles of Fe3O4…

Q: a. The combustion of ethanol (C2 H; OH) forms carbon dioxide and water vapor. A combustion reaction…

A:

Q: If you blow carbon dioxide gas into a solution of calcium hydroxide, a milky-white precipitate of…

A: When we blow carbon dioxide gas into a solution of calcium hydroxide, a milky-white precipitate of…

Q: A 0.5683 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide…

A:

Q: Aluminum in an ore sample is determined by dissolving it and then precipitating with base as Al(OH)3…

A: Given, 0.2385 g of precipitate

Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.3 grams of monohydrated Sodium carbonate…

A: Monohydrate sodium carbonate (CH2Na2O4) = 6.3 g  Potassium bitartrate (C4H5KO6) = 20 g  Rochelle…

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: A 35 mL of a Na3PO4 aqueous solution and 35mL of a BaCl2 aqueous solution were combined to form…

A: Given :-  Volume of Na3PO4 solution = 35 mL  Volume of BaCl2 solution = 35 mL   Amount of Ba3(PO4)2…

Q: O A chemical engineer determines the mass percent of iron in an ore sample by converting Fe to Fe in…

A: The balanced reaction taking place is given as, Given : Concentration of KMnO4 = 0.03190 M Volume…

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

A:

Q: In the laboratory you are given the task of separating Pb²+ and Co²+ ions in aqueous solution. For…

A: In this question, we have to find out the correct answer of given problem by the help of Reactivity…

Q: 3. Write balanced chemical equations for the following chemical reactions. a. Lime (calcium oxide)…

A: a ) When lime (calcium oxide) with water to produce Slaked lime i.e Calcium hydroxide. The balanced…

Q: Balance the reactions and indicate which type of chemical reaction (synthesis [S), decomposition…

A: Since you have posted multiple questions, the answer for first three questions are given below.…

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

A:

Q: Question 89, Chapter 5 of General Chemistry 11th Edition, by Petrucci. The active ingredients in a…

A: The balanced chemical equation between aluminium hydroxide and magnesium hydroxide with hydrogen…

Q: Balance the following equation and write the sum of the coefficients of the reactants and products…

A: Gicen :reaction

Q: 1.000 g sample of an aluminum is dissolved and the sulfate precipitated as BaSO4. The precipitate…

A: Given data, Mass of sample = 1.0g Mass of precipitate (BaSO4) = 0.3486g Molar mass of BaSO4 =…

Q: Balance the following chemical equation (if necessary): H,SO,(aq) + Pb(OH),(s) → Pb(SO,)2(s) +…

A: in Balanced chemical equation,  total number of atom are same on both side of reactent and products.…

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: Balance the following equations and indicate whether they are combination, decomposition, or…

A: 3.21  Given Unbalanced chemical equations,  (a) C3H6 (g) + O2 (g) → CO2 (g) + H2O (g) (b) NH4NO3 (s)…

Q: razine, a fuel used to power rocket engines, is a product of the reaction between ammonia and…

A:

Q: Complete and balance the molecular equation for the reaction of aqueous sodium sulfate, Na, SO,, and…

A: Write the balanced molecular equation  Split electrolytes to ions to get the total ionic equation…

Q: The steps to balancing a neutralization reaction when given a verbal description can be summarized…

A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…

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: What are the conditions for the precipitation of sulphur from the sample solution in DETERMINATION…

A: Sulphur containing samples in presence of excess BaCl2 solution would precipitate as BaSO4. The…

Q: a. The neutralization of sulfuric acid by potassium hydroxide. b. The reaction between aluminum…

A: While balancing a chemical reaction we make sure that both the reactant and product side have the…

Q: The active ingredient in a zinc nutritional supplement is ZnSO, · 7 H,O (molar mass = 287.58 g/mol).…

A:

Q: For the synthesis of boric acid; 7.94 g of anhydrous borax was taken and 15 mL of water was added…

A:

Q: Write the balanced molecular chemical equation for the reaction of solid magnesium with aqueous…

A: Chemical equation is the equation in which the chemical reaction is represented. All the reactant…

Q: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

A: #(a): Given the mass of the iron tablet taken to obtain Fe2O3(s) = 2.7544 g  Mass of pure and dry…

Q: How to write a chemical equation for: _______Cu (s) + _____ O2 (g) ---> ______   Could you…

A: The given equation is to be completed-

Q: In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was…

A: 2HNO3 + Na2CO3 ----------> 2NaNO3 + CO2 + H2O Atomic weight of H = 1g/mol Atomic weight of N =…

Q: The following precipitation reaction is perfomed using 3.785 g of FeCk and 2.258 g of NaOH. FeCk…

A: The highest product amount produced in any chemical change is denoted as its "theoretical yield". It…

Q: Thioridazine, C21H26N2S2, is a pharmaceutical agent used to regulate dopamine. (dopamine a…

A:

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

A:

Q: Write balanced chemical eauations for the following reactions. The reaction of aqueous iron(III)…

A:

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: A 0,4500 g sample of a pesticide (DDT, C14H9Cl5, MM 354,49 g mol^-1) was decomposed with metallic…

A: Given that : Mass of sample of pesticide (DDT, C14H9Cl5) = 0.4500 g Molar mass of pesticide…

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: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

A: A question based on mole concept that is to be accomplished.

Q: Question in image

A: (a) The volume of the average titer is 15.65 mL or 0.01565 L. The number of moles of triiodide ion…

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: A powder contains FeSO4⋅7H2OFeSO4⋅7H2O (molar mass=278.01 g/mol),(molar mass=278.01 g/mol), among…

A: The reactions taking place are as follows: FeSO4.7H2O+HNO3→Fe3+2Fe3++NH3→Fe2O3.xH2OFe2O3.xH2O→Fe2O3…

Q: In the laboratory you are given the task of separating Ag* and Zn* ions in aqueous solution. For…

A: The given ions for the separation are: Ag+ and Zn2+. Ions can be separated in the form of…