Cr in an ore exists as Cr2O3, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate the Cr content as % (w/w) Cr2O3 (151.99 g/mol), if a 0.8000 g ore sample yields 0.4030 g BaCrO4.
Q: the determination of iron in limonite, 0.5166 g of minerals dissolve in acid and Fe2+ is titrated…
A: First find the moles of K2Cr2O7 utilized. Then using reaction stoichiometry finally the moles of…
Q: A feldspar sample was analyzed. In the analysis of 0.4270-g sample, a mixture of KCl and NaCl is…
A:
Q: .A 1.6394-g sample of limestone taken from Sinuhutan Cave in Brgy. Onop, Miagao was analyzed for Fe,…
A: A numerical problem based on inorganic chemistry, which is to be accomplished.
Q: Explain Ostwald process of manufacturing nitric acid(HNO3)
A: There was a German Scientist who developed a process that is useful in manufacturing nitric acid.…
Q: 2. 0.4852 g sample of iron ore is dissolved in acid, oxidized to +3 state and precipitated as…
A:
Q: Determine the oxidation state of: 1. Cr in KCr2O7
A: Calculation of oxidation state of chromium in given potassium dichromate compound. Oxidation state…
Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…
A: Amount of limonite = 0.5166 g 42 96 ml of 0.0213 M Na2Cr2O4 is added in the titration. Molar mass of…
Q: In the reaction, Fe2+ + Cr2O72- Fe3+ + Cr3+, which is involved in oxidation? A. Fe B. Cr2O7 C. Cr…
A:
Q: What is the oxidation state of each element in K,Cr,0,? Cr к What is the oxidation state of each…
A: (a) Oxidation state of each elements in K2Cr2O7 Oxidation state of K = +1 Oxidation state of Cr = +6…
Q: Many transition metals and their compounds are used as catalysts. Given MnO2, FeCl3, Pt, and Ni,…
A: Catalyst are the compounds that lowers the activation energy of reaction to increase the rate of the…
Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…
A: This question is related to finding out the percentage of Fe2+ in the given iron ore sample. First…
Q: For an alloy that consists of 86.0 g copper, 117 g zinc, and 7.75 g lead, what are the…
A: Alloy consist of:Copper (Cu) = 86.0g, zinc (Zn) = 117 g, lead (Pb) = 7.75 g.Atomic weight of:Copper…
Q: Ore containing the mineral clerite, MnSb,S,. is mined for its antimony content. During processing…
A: To get antimony content ore is mined. The mineral present in the ore is ------MnSb2S4. It is…
Q: Cr in which oxidation state is most stable?
A: Chromium has electronic configuration of [At] 3d5 4s1. When chromium reacts with another elements,it…
Q: If you use 10.0g of CuSO4 and excess NH3, what is the theoretical yield of Cu(NH3)4SO4?
A: Copper sulphate reacts with excess of ammonia to form a compound CuNH34SO4. Mass of CuSO4 is 10 g.
Q: Question attached
A: NOTE : Since you've posted multiple questions,we've solved first question for you. If you want any…
Q: What is the percentage of iron (AW 55.845 g/mol) in an ore if the weight of Fe203 (FW 159.687 g/mol)…
A: The molar mass of iron (III) oxide is = 159.687 g/mol The atomic mass of iron is = 55.845 g/mol The…
Q: 2. An iron ore was analyzed by dissolving a 1.1324 g sample in concentrated HC. The resulting…
A: Percentage of Fe and Fe3O4 can be calculated from the total moles of iron present in the sample.
Q: An ore is analyzed for the manganese content by converting the manganese to Mn3O4 and weighing it.…
A: The mass of the ore sample is = 2.51 g The mass of the Mn3O4 is = 0.261 g The mss percent of Mn2O3…
Q: What is the oxidation state of Ti in TiO2? Group of answer choices 2- 2 4 0 4- 2,
A: "Since, you posted multiple questions . So, we will solve the first question for you. If you want…
Q: Determine the percentage of iron in a sample of limonite from the following data. Weight of sample…
A: Weight of sample = 0.5000 g Molar Mass of Iron = 55.85 g Molar mass of FeO = 71.84 g Volume of…
Q: Determine the theoretical amount of lead chromate (PbCrO4) that can be obtained from 1000 lg of the…
A: Mass of chromite ore = 1000 kg % of Cr2O3 present in ore =…
Q: 0.6465 grams of bleach, Ca(OCl)2, is dissolved in acid and treated with excess KI. Calculate the…
A: The question is based on quantitative analysis. we have to calculate percentage calcium hypochlorite…
Q: The final step in the smelting of FeCuS₂ is Cu₂S(s) +2Cu₂O(s) →6Cu(l) +SO₂(g)(a) Give the…
A: Redox reactions are the combination of reduction and oxidation reactions. The type of reaction in…
Q: Why is the oxidation state of Fe 2.5?
A: Iron is a transition metal. It can exists in more than one oxidation state in the bonded state.
Q: 5. Name following compounds and find the oxidation states of them. (a) [Co(NH3)6]Cl; (b)…
A: Here we are required to name the complex and also find the oxidation state of the central metal.
Q: A. 1.4639 g sample of limestone was analyzed for Fe, Ca and Mg. The iron was determined as Fe2O3,…
A:
Q: A 0.4560 g mixture of FeCl3 and FeBr3 was dissolved in water and reacted with excess NaOH. All of…
A: The balanced chemical equation for the reaction is: (FeCl3+FeBr3) (aq)+3NaOH(aq)-> Fe(OH)3(s) + 3…
Q: An ore is analyzed for manganese content gt converting the manganese to Mn3O4 and weighing it. If a…
A: Weight of sample = 1.52 g Yield of sample = 0.126 g
Q: How many grams of ironare produced from 1.00 Kg Fe2O3?The reaction is Fe2O3(s) + 3CO (g) → 2Fe(s) +…
A:
Q: 26. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure…
A: Here we are required to find the percentage of Fe and ferric oxide present in the iron ore B having…
Q: Which reagent is capable of oxidizing Cu to Cu2+ but does not oxidize Au to Au3+ ?
A: The substance that has higher electrode reduction potential acts a good oxidizing agent for the…
Q: Potassium dichromate is used to titrate a sample containing an unknown percentage of iron (AW.…
A: We have to tell which option is correct from given choices of options by telling percentage of iron…
Q: A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted…
A: Given data Mass of ore = 0.630 g Volume of solution = 50 ml = 0.05 L Absorbance of solution = 0.74 =…
Q: Ore containing the mineral clerite, MnSb,S, is mined for its antimony content. During processing the…
A: Please find the solution below:
Q: Which is the common ore of magnesium MgS or MgSO4
A: Ores are the naturally occurring solid material from which a metal can be extracted.
Q: 0.5 g sample of an alloy containing 30% (m/m) iron (MM 55.84 g/mol) is dissolved in acid and diluted…
A: Mass of iron in alloy can be calculated using the formula:Mass % = (Mass of element / Mass of…
Q: How many mg of iron are present in a 236.5 g ore sample containing 0.15% iron by mass?
A: We need to first calculate the mass of iron present by mass in the given quantity of ore, and then…
Q: An ore is analysed lor the manganese content by converting the mangnese to Mo and woghing a152g…
A:
Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…
A: Molarity of solution is equal to the number of moles of solute divided by the volume of solution in…
Q: A 0.8965g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in…
A: Since you have asked a question with multiple sub-parts, we will solve first three subparts for you.…
Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…
A: Mass percent :- The mass in grams of a substance present in 100 grams of the mixture is defined as…
Q: For the gravimetric determination of manganese, 1.8762 g of sample containing Mn was dissolved in…
A: Molecular weight of Mn2P2O7 = (55×2)+(31×2)+(16×7) = 284 So, 284 g of Mn2P2O7 contains (55×2) g =…
Q: The phosphorus in a 0.2091-g sample was precipitated as the slightly soluble (NH4)3PO4 -12M0O3. This…
A: Given, mass of sample = 0.2091 g mass of PbMoO4=0.2922 g
Q: 24. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure…
A: First of all we have to find mole of Fe from the mole of Fe2O3. From that we will get mass of Fe.…
Q: 0.6465 grams of bleach, Ca(OCl)2, is dissolved in acid and treated with excess KI. Calculate the…
A: 2 moles of iodide reacts with bleach so from iodide moles moles of bleach can be found out.
Q: A 5.70 g iron ore was dissolved in concentrated HCl. After the dissolution, the resulting solution…
A:
Cr in an ore exists as Cr2O3, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate the Cr content as % (w/w) Cr2O3 (151.99 g/mol), if a 0.8000 g ore sample yields 0.4030 g BaCrO4.
Step by step
Solved in 2 steps with 2 images
- A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the %Fe in Ore B?An ore containing magnetite, Fe3O4 was analyzed by dissolving a 1.5419 g sample in concentrated HCl, giving a mixture of Fe2+ and Fe3+. After adding HNO3 to oxidize any Fe2+ to Fe3+, the resulting solution was diluted with water and the Fe3+ precipitated as Fe(OH)3 by adding NH3. After filtering and rinsing, the residue was ignited, giving 0.8525 g of pure Fe2O3. Calculate the %w/w Fe3O4 in the sample.An ore containing magnetite, Fe3O4, was analysed by dissolving a 4.9 g sample in concentrated HCl, giving a mixture of Fe2+ and Fe3+. After adding HNO3 to oxidize any Fe2+ to Fe3+, the resulting solution was diluted with water and the Fe3+ precipitated as Fe(OH)3 by adding NH3. After filtering and rinsing, the residue was ignited, giving 2.8 g of pure Fe2O3. Calculate the %w/w Fe3O4 in the sample (Fe3O4 =231.54 g/mol, Fe2O3 = 159.69 g/mol)
- 26. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3.What is the %Fe in Ore B?What is the %Fe3O4 in Ore B?A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the % Fe (55.85 g/mol) in Ore A?Determine the percentage of iron in a sample of limonite from the following data. Weight of sample — 0.5000-g Volume of KMnO4 added — 50.0-mL (1.00-mL KMnO4 ≈ 0.005317-g Fe) Volume of FeSO4 — 6.00-mL (1.00-mL FeSO4 ≈ 0.00920-g FeO) Molar Masses: Fe = 55.85 FeO = 71.84
- Chromite ore analyzed 30.4% Cr2O3. Determine the theoretical amount of lead chromate (PbCrO4) that can be obtained from 1000 lg of the ore.A 8.12 kg mixed-mineral sample contains chromite (FeCr2O4) as the only chromium-bearing ore. The sample is subjected to an industrial process, using a ferrosilicon alloy as a reducing agent, which quantitatively converts all of the chromium into 12.9 kg of a ferrochrome alloy (stainless steel) which is 19.3% Cr by mass. What is the percentage of chromite (FeCr2O4) in the original sample?Calculate the oxidation number of: a. Fe in Fe2O3 b. Cr in CrO4^2- c. Cr in Cr2O7^2-
- A 0.5 g sample of an alloy containing 30% (m/m) iron (MM 55.84 g/mol) is dissolved in acid and diluted to 1 L with deionized water. A 10 mL aliquot was taken for analysis, conveniently diluted and included with an excess of ammonium hydroxide, which led to the formation of a reddish solid. After filtration and washing, the solid was calcined to Fe2O3 (MM 159.69 g/mol). Calculate the mass of this final product.28. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3.An ore is analyzed for manganese content gt converting the manganese to Mn3O4 and weighing it. If a 1.52 g sample yields Mn3O4 weighing 0.126 g, what would be the Mn2O3% in th sample? Mn% in the sample?