What is the percentage of manganese in the original sample?

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 mixture of NaCl(s) and BaCl2(s) weighing 2.86 grams is dissolved in water. When AgNO3(s) is added…

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Q: If 23.3 grams of an aqueous solution of manganese(II) sulfate, MnSO4, contains 5.96 grams of…

A: Percentage by mass – ratio of Mass of solute to the Mass of solution and multiplied by 100 is…

Q: Many fertilizers contain ammonium phosphate as a source of phosphorus and nitrogen. A 8.22 g sample…

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

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Q: 6. If you dissolved 5.0 g of nickel (II) chloride hexahydrate in 20 mL of 2.0 M…

A: limiting reactant is totally consumed during reaction and limiting reactant leads to tell the amount…

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: To determine the amount of platinum in an alloy, a 8.565 g8.565 g sample of an alloy containing…

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Q: A student wants to prepare a solution of chromium(III) nitrate with a known molarity. How many…

A: Given data, Volume of Cr(NO3)3 solution (v) = 500 mL = 0.5 L Concentration of Cr(NO3)3 solution (M)…

Q: So if I have 314.61 mL of a 0.562 M NaOH solution, how many moles of NaOH do I have?  Enter your…

A: The concentration of a solution is defined as “the amount of solute present in the solvent of the…

Q: Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is often found mixed up with sand.…

A: Ilmenite can be separated from sand with magnets

Q: Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of…

A: The given reaction is: Li2S(aq)+CuNO32(aq)→LiNO3(aq)+CuS(s) The above reaction is not balanced. Its…

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: A solution contains one or more of the following ions: Ag*, Ca, and Co. Lithium bromide is added to…

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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: A student analyzes a sample of rock that contains the element calcium (Ca). In the student's…

A: Given that,182.2 mg of the rock produces 120.7 mg of CaC2O4 on treatment of Na2C2O4 We have to find…

Q: An aqueous solution containing 3.89 g of sodium phosphate was mixed with an aqueous solution…

A: The question is based on the concept of Reaction Stoichiometry.   We have to identify the limiting…

Q: Molarity is a concentration term that relates moles of solute and total volume. We use the symbol M…

A: Molarity is simply calculated using the formula Molarity (M) = (Number of mole of solute) /…

Q: A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.200-g sample of…

A: Answer:The question is based on the concept of gravimetric analysis and Stoichiometric Calculations.…

Q: The zinc in a 1.199 g sample of a foot powder was precipitated as ZNNH,PO4. Strong heating of the…

A: Given :  Mass of foot powder = 1.199 g  Mass of Zn2P2O7 produced = 0.4089 g

Q: In an experiment, 0.2490 g of sodium bicarbonate, NaHCO3(s) was allowed to react with excess…

A: In the given question we have to calculate the percent yield of NaCl in the following reaction,…

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: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

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Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

A: First step :  2MnCO3(s) + O2(g) -------> 2MnO2(s) + 2CO2(g)  Second step :  3MnO2(s) + 4Al(s)…

Q: Write a balanced chemical equation based on the following description: the reaction of solid…

A: Solid iron(III) sulfide reacts with aqueous hydrochloric acid to form aqueous iron(III) chloride and…

Q: A mixture contains Mg(NO3)2 and KBr. A 1.85 g sample of this mixture is dissolved in water and an…

A: The objective of this question is to determine the mass percentage of  in the original mixture.

Q: Determine the mass of sodium nitrate produced when 0.73 g of aqueous nickel(II) nitrate reacts with…

A: NOTE : There is a typing error in question. The solid will be of nickel (II) hydroxide and and…

Q: Manganese commonly occurs in nature as a mineral. The extraction of manganese from the carbonite…

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Q: A mixture consisting of only copper(II) chloride (CuCl₂) and calcium chloride (CaCl₂) weighs 1.0052…

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Q: . Barium-contaminated soil can be remediated by immobilization of the barium as alforsite,…

A: A) To calculate the weight percent of alforsite in the soil sample, you need to find the mass of the…

Q: If 25.5 mL of a 0.123 M solution of iodide was added to 22.3 mL of a 0.209 M solution of iodate ions…

A: The reactants given are iodide i.e I- and Iodate i.e IO3- and the product forming is I3-. Hence the…

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…

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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: O A mixture consisting of only chromium(III) bromide (CrBr3) and aluminum bromide (AlBr3) weighs…

A: The objective is to calculate the mass percentage of CrBr3 and AlBr3.GivenThe mixture of CrBr3 and…

Q: 6. While investigating mole ratios, a group of students collected data for the following chemical…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

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…

Q: How many grams of silver nitrate must react to give 1.00g of Ag?…

A: To solve this problem we have to use the balanced chemical equation .

Q: In the laboratory you are given the task of separating Ba2+ and Fe²+ ions in aqueous solution. For…

A: A reagent must consist of ions that are soluble with one of the two ions and insoluble with the…

Q: You very carefully heat the compound for an extended period of time to drive off water, after which…

A: (i) Yes, it is correct formula of hydrated salt (ii) Mass of water = 0.2500 - 0.1598   = 0.0902 g…

Q: 1.45-g sample of oxalic acid, H2C2O4, is dissolved in distilled water to make 50.00 mL of aqueous…

A: Redox reaction- the reaction in which oxidation and reduction takes place simultaneously called as…

Q: Which of the following reactions does the chemical equation below best represent? 3 Cu(CI), (aq) + 2…

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Q: Two solutions were made, the first one was made by dissolving 2.27 g of Co(NO3)2 in 100.0 mL of…

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Q: Mining companies use this reaction to obtain iron from iron ore: Fe₂O3(s) + 3 CO(g) → 2 Fe(s) + 3…

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Q: A mixture contains Mg(NO3)2 and KBr. A 1.85 g sample of this mixture is dissolved in water and an…

A: Given,  The mass of mixture of Mg(NO3)2 and KBr = 1.85 g. This mixture is dissolved in water and an…

Q: Antimony is alloyed with lead to increase the rigidity of components used in the construction of…

A: The mass of the Pb-Sb alloy = 1.304 g. The molar mass of Sb, (MSb) = 121.76 g/mol. The molar mass of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.