A sample of manganese weighing 3.245 g is dissolved in 2.00 M HCl....   A) When an excess of Na2S solution is added to the above solution, MnS precipitates. What mass of MnS should be obtained? B) If 4.46 g of MnS were obtained, what was the percent yield of the product, MnS?

Q: 1.736 g of iron ore is dissolved with acid and precipitated as Fe2O3X.H2O. After the precipitate is…

A: The percentage of the Iron in the sample of iron ore can be calculated as:

Q: An impure sample of table salt that weighed 0.8571 g when dissolved in water and treated with excess…

A: Given: Mass of table salt sample = 0.8571 g. And mass of AgCl precipitates formed = 2.031 g. Molar…

Q: 3.00- g sample of an alloy of Pb Lead was dissolved in nitric acid (HNO3). Sulfuric acid was added…

A: First Calculate mole by dividing Molar mass to the mass  Then use mole -mole relationship to get…

Q: 0.250g of HI is dissolved in 300. mL of a 0.00520 M solution of Ca(OH)2. (Assume this does not…

A: Number of moles is equal to ratio of mass to molar mass. Number of moles=MassMolar mass Limiting…

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: A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8 H6 Cl2 O3. A 1.265-g sample of the…

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

Q: A 0.2417g sample of a compound composed of C,H,O,Cl only, is burned in oxygen yielding 0.4964g of…

A:

Q: A sample of 0.7960 g of an unknown compound containing barium ions (Ba5 is dissolved in water and…

A: The given compound is BaSO4. The molar mass of BaSO4 = Molar mass of Barium + Molar mass of Sulphur…

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

A:

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

A:

Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: First of all we have to calculate the moles of Fe2O3. From that only we get the moles of Fe and…

Q: An impure sample of Na2SO4 weighed 1.562g. A BaSO4 precipitate from this sample weighed 2.496g.…

A: Percentage of sulphur is 13.74% .

Q: A sample of manganese weighing 1.743 g is dissolved in 4.00 M HCl. What (minimum) volume of HCl is…

A: In this question we will apply the concept of redox reaction and we will write the balanced chemical…

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

A:

Q: How many ions can you get in solution from 123.1 grams of MoCl3?

A:

Q: A sample of 0.3220 g of an ionic compound containing the bromide ion (Br−) is dissolved in water and…

A: Calculate the number of moles of AgBr formed. Number of moles = Given massMolar massNumber of moles…

Q: Treatment of a 0.3500-g sample of impure potassium chloride with an excess of AgNO, resulted in the…

A: Here, potassium chloride is limiting reagent....

Q: Treatment of a 0.530 g sample of impure potassium chloride with an excess of AgNO3, resulted in the…

A:

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: Calculate the theoretical yield of MgCl2 in moles when 0.326 grams of MgO are reacted with 30.4 mL…

A:

Q: What is efflorescence? Give an example?

A: The structure of chemical compound can be represented as structural formula. A structural formula…

Q: Q3. 1.5g of 0.1M NaCl has been prepared in 1L and only 25 of NaCl solution has been used to titrate…

A: Introduction: Percentage yield if the ratio between the actual yield of chemical species to the…

Q: Vanadium can be obtained by processing VO2 Which is 61.42% vanadium and 38.58 % Oxygen What mass of…

A: The mass percent of vanadium in vanadium(IV) oxide is = 61.42 % The required mass of vanadium is =…

Q: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric…

A: Yield is defined as the amount produced during a reaction. It means that yteld is nothing but the…

Q: Treatment of a 0.2500-g sample of impure potassium chloride with an excess of AgNO3 resulted in the…

A: Given: Mass of sample = 0.2500 g Mass of AgCl = 0.2912 g Molar mass of AgCl = 143.32 g/mol Molar…

Q: A sample of magnetite  (impure Fe3O4) weighing 0.4500 g is fused with oxidizing flux and the ferric…

A: Magnetite is an ore of Fe with the formula Fe3O4

Q: 96. Aluminum is produced comi AlO, in the presence of a m tinuous capacity of 1.00 mil can be…

A: The reaction which is taking place here  Al2O3+6e-+6H+→2Al+3H2O Given  i =1 million Ampere Time= 2…

Q: A 0.8761 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

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: The accompanying photo shows the reaction between asolution of Cd1NO322 and one of Na2S. (a) What is…

A: a) Cadmium nitrate[Cd(NO3)2] reacts with sodium sulfide (Na2S) to form cadmium sulfide(CdS) and…

Q: What is the oxidation state of Co in: Na4[Co(CN),] ?

A: Oxidation state of Co in Na4[Co(CN)6]

Q: Treatment of a 0.2500-g sample of impure potassium chloride with an excess of AgNO3 resulted in the…

A: Given: mass of KCl = 0.2500 g mass of AgCl = 0.2912 g molar mass of KCl = 74.55 g/mol molar mass of…

Q: 1. If 30.4 g of Nal (MM=149.89g/mol) are added to a 500.0 mL volumetric flask, and water is added to…

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

Q: How many grams of Na,sO4 would you need to dissolve in 1.37 L of water in order to create a solution…

A: The Na2SO4 dissolved in water and form 2Na+ and SO4-2 There are  3 moles of  ions are formed…

Q: grams of Na,cO, (MW=106.g/mole) 2.5543 are placed in volumetric flask and dissolve in water to 500…

A: Answer

Q: (b) A metallurgical laboratory carried out analysis of a sample in which analysis of Mn was done by…

A: The mass of the ore sample is = 3.18 g The mass of the MnSO4 precipitate is = 0.28 g The percentage…

Q: (a) How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto…

A: Given area = 0.32 m2 density = 7.2 g/cm3 atomic weight = 52 g/mol thickness = 0.25 mm

Q: When an sample of impure potassium chloride (0.4500g) was dissolved in water and treated with an…

A: Given, mass of sample of impure potassium chloride = 0.4500 g Excess reactant = silver nitrate Mass…

Q: i'he density of concentrated sulfuric acid containing 94% by mass of H2SO4 is 1.836 g/mL. Calculate…

A:

Q: what mass of hydrogen sulphate can be prepared from 50.0 g sulphur dioxide, 15.0 g oxygen, and 980.0…

A:

Q: A 0.8571 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A: The mass of the iron ore sample is = 0.8571 g The mass of iron(III) oxide is = 0.1132 g The molar…

Q: 5. A 0.5664 g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in…

A:

Q: Aluminum can be used to remove the tarnish from silver: 3Ag2S(s) + 2Al(s)→ 6Ag(s) + Al2S3(s) How…

A: Atomic weight of alluminium is 26.98 g and molecular weight of Ag2S is 247.8 g    Note: According to…

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: how would I balance this assuming there's 3 moles of Cu(NO3)2 present, and no water in the reaction…

A: Correction: The reaction between copper nitrate and sodium carbonate is a double displacement…

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: The accompanying photo shows the reaction between asolution of Cd(NO3)2 and one of Na2S. (a) What is…

A: The ionic equation is the chemical equation in which the ions of the molecules are represented as…