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)3. 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 FESO4-7H2O per tablet.

Q: A powder contains FeSO, 7H,O (molar mass = 278.01 g/mol), among other components. A 3.725 g sample…

A: Given information: Mass of sample = 3.725 g Mass of Fe2O3 = 0.251 g Molar mass of FeSO4.7H2O =…

Q: 164.00 mL of 0.200 M Cu(NO3)2(aq) is mixed with 93.000 mL of 0.400 M NaOH(aq). Assuming 100% yield,…

A: The chemical reaction is: Cu(NO3)2 (aq) + 2NaOH (aq) →Cu(OH)2 (s) + 2NaNO3 (aq)

Q: In the reaction between KCl(aq) and AgNO3(aq), a precipitate of AgCl(s) will form. What mass (in…

A: Molarity of AgNO3 solution = 0.220 Volume of AgNO3 solution = 27.2*10-3 Molar mass of KCl= 74.55…

Q: 100.0 mL of an aqueous solution containing 0.250 M KOH(aq) is mixed with 100.0 mL of an aqueous…

A: First of all, we need to write down the balanced chemical.  The molar mass of Fe(OH)3 = 106.87g/mol

Q: When a solution of dithionite ions (S2O42–) is added to a solution of chromate ions (CrO42–), the…

A: We have find out the a) net ionic equation for this reaction and (b) How many grams of sodium…

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: Suppose that 40.0 mL of 0.100 M NaOH(aq) is added to 10.0 mL of 0.200 M Cu(NO3)2(aq). (a) Write the…

A: (a) The chemical equation for the precipitation reaction is:   Cu(NO3)2(aq) + 2NaOH(aq) ->…

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

A: Answer: This question is based on stoichiometric calculation where first of all we have to convert…

Q: 7.) A student dissolved 5.00 g of Co(NO3)2 in enough water to make 100. mL of stocksolution. They…

A: Molar mass of Co(NO3)2 is 183 g/mol Hence moles of Co(NO3)2 taken = mass / molar mass = 5 / 183 =…

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

A:

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: Hexane is a colourless liquid with a characteristic smell that reacts with chlorine gas in the…

A: Hexane is a colourless liquid with a characteristic smell that reacts with chlorine gas in the…

Q: 170.00 mL of 0.500 M BaCl2(aq) is mixed with 60.000 mL of 0.500 M Li3PO4(aq). Assuming 100% yield,…

A: The overall reaction will be :   3 BaCl2(aq) + 2 Li3PO4(aq) = Ba3(PO4)2(s) + 6 LiCl(aq)…

Q: Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical…

A: Given,The incomplete reaction equation : → KNO3(aq) + H2O(l)

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A:

Q: If 45.4 mL of 0.25 M HCl(aq) reacts with an excess of Mg(OH)2(aq), what mass of magnesium chloride…

A:

Q: A student investigated the stoichiometry of the reaction of zinc (Zn) with HCl solution and reported…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A solution of 300.0 mL of 0.150 M Nickel (II) sulfate is mixed with a solution of 100.0 mL of 0.200…

A: Balanced chemical equation is necessary so as to abide by the law of conservation of mass and to…

Q: Hello! I need your help with the question attached. Please show all the work. Please provide the…

A: Given the balanced molecular equation. 6KOHaq+Fe2SO43aq→2FeOH3s+3K2SO4aq

Q: What is the concentration (in Molarity units) of [Cu2+] in a solution that was prepared by weighing…

A:

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

A:

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

A: Molar mass of Fe3O4 - 231.533 g/mol Given, 2.9912 g of ore sample. Fe2O3 obtained - 0.8394 g.

Q: and water. Write the balanced chemical equ

A: Balanced chemical equation is that in which number of different atoms of elements in reactant side…

Q: 2.) Five standardized dilutions of aqueous lead(11) chromate solution were prepared by adding a…

A:

Q: A sample of ore containing manganese weighed 1.2354 grams. This sample was heated in a solution of…

A: A question based on mole concept. A set of data about the ore is given using that the percentage of…

Q: A 4.50 g sample of limestone (impure CaCO3) was dissolved in 0.1M HCl solution according to the…

A: Calcium oxalate can be precipitated during the reaction of calcium chloride and ammonium oxalate.…

Q: A student Investigated the stoichiometry of the reaction of zinc (Zn) and HCl solution and reported…

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

Q: 10. Write the formula (molecular) equation, complete ionic equation and net ionic equation for each…

A: Answer :-  a)  i) Molecular equation  Cr(OH)3 (aq) + 3HI (aq) → CrI3(s) + 3H2O(l)  ii) Complete…

Q: A student investigated the stoichiometry of the reaction of zinc (Zn) with HCI solution and reported…

A:

Q: Complete and balance the equations for the following acid-base neutralization reactions. If water is…

A: To complete and balance the below acid-base reactions MgOH2s+HClO4aq→SO3g+2H2Ol→SrOs+H2SO4l→

Q: A 6.586-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water…

A: Mass of sample = 6.586 g Mass of sample solution = 500 mL Mass of AgCl formed from 50 mL solution =…

Q: M. Write the net ionic equation for the formation of each of the following insoluble compounds in…

A: a) The net ionic equation for the formation of lead(II) chromate in aqueous solution is as follows:…

Q: Thallium(I) sulfate is an active ingredient in rat poison. We can analyze a sample for the mass…

A:

Q: 7. Complete and balance the equations for the reactions. All reactions yield products. Cl2(g) (a)…

A: Dear student, as this picture contains multiple questions. We are answering only 7th  question. If…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)₂(aq), until no further…

A: Answer: In this question we have to convert the mass of PbCl2 into moles of Pb(NO3)2 to find out its…

Q: Suppose you took a 3.00 mL sample of HNO3 (aq) of an unknown concentration, and find that you have…

A: Given: Volume of HNO3 = 3.00 mL Volume of NaOH solution = 20.30 mL Molarity of NaOH solution = 0.106…

Q: e: you are writing the molecular, and not the net ionic equat [] → NaNO₂ (aq) + H₂O(1)

A: The products given are 1) Salt NaNO3  2) water H2O

Q: Complete and balance the molecular equation for the reaction of aqueous iron(III) nitrate, Fe(NO…

A: Since, Balanced reaction means that both side number of atom present in equal number. Thus, For…

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…

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".