A 30.7 g sample of a mixture of KNO3 and Mg(NO3)2 is treated with an excess of aqueous Na2CO3.  All of the solid precipitates are filtered, dried and weighed.  If the precipitate weighs 7.6 g, what is the percent by mass of KNO3 in the mixture?

Q: A 10.4 g sample of a mixture of NaCl and BaCl2 is treated with an excess of aqueous K2SO4. All of…

A: The mass of the mixture of NaCl and BaCl2 is = 10.4 g The mass of precipitates is = 5.82 g Percent…

Q: To determine the amount of iron in a dietary supplement, a random sample of 15 tablets weighing a…

A: A numerical problem based on quantifying Fe in the given tablet, which is to be accomplished.

Q: A student named Jack precipitated lead ions from solution using the following reaction Pb (aq) + 2…

A: Percentage yield = (Actual Yield / Theoretical Yield) x 100%   Given Actual Yield (Yield that Jack…

Q: An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A…

A: Given: Number of sodium ions = 4.408*1020

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

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Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: The balanced reaction taking place is given as, => SnCl2 (aq) + 2 AgNO3 (aq) -----> 2 AgCl +…

Q: sodium thiosulfate, Na2S2O3,Na2S2O3, solution for a titration experiment. To do so, he or she will…

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Q: 2. 19.32 mL of 0.500 M NaOH solution is required to exactly neutralize a 10.00 mL sample of vinegar.…

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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: 5.587 grams of Pb(NO3)2 are reacted with 5.587 grams of Na2S, and the resulting precipitate is…

A: The given reaction is as follows. Pb(NO3)2aq+Na2Saq→2NaNO3aq+PbSs The precipitate formed in this…

Q: Does a reaction occur when aqueous solutions of nickel(II) nitrate and copper(II) iodide are…

A: To explain whether a reaction occurs or not when aqueous solutions of nickel(II) nitrate and…

Q: In the “Methodé Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine.…

A: 750 ml Of grape juice is allowed for fermentation untill 12.5% by volume of ethanol. Density of…

Q: Which of the following compounds will have the state symbol (aq) when mixed with water? Remember…

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Q: A student uses 1.05 g of a tablet containing Carbonic Acid dissolved in 0.05 L distilled water. The…

A: Given: Volume of distilled water = 0.05L , mass of solute = 1.05 g ,volume of NaOH = 3.76 mL  To…

Q: Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3).…

A: Given: Mass of salicylic acid = 1.00 x 102g= 100g To find: The mass of acetic anhydride Maximum mass…

Q: The magnesium content of a 100 ml sample of mineral water is analyzed. The Mg2+ in the sample…

A: PART-(a)•So finally according to question Mg+2 present as Mg2P2O7. •1 mole of Mg2P2O7  has 2 mole of…

Q: What is the minimum mass of sodium hydroxide required to neutralize a solution that was prepared by…

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Q: Calcium in river water samples can be precipitated out as Ca10(PO4)6(OH)2 (1,004.6 g/mol). The…

A: IMPORTANT POINTS Approximate value of Calcium present in nearby laboratory water is given in the…

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

A: Consider the given information is as follows; Mass of Ba3PO42 = 0.520 g Volume of BaCl2 = 35 mL =…

Q: A student weighs out a 3.22 g sample of K2SO4 , transfers it to a 100. mL volumetric flask, adds…

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Q: What is the molarity of toluene in a solution that is prepared by adding 59.3 g of toluene (CH)…

A: Since we know that  Molarity = number of mole of solute /volume of solution in L  First we calculate…

Q: rock is to precipitate the phosphorus as MgNH4PO4, which is then heated to tum it into Mg2P2O7. What…

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Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A:

Q: A 12.7 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If…

A: Given data,Mass of sample=12.7gMolarity of NaOH=0.325MVolume of NaOH=24.2mL=0.0242L

Q: Write the balanced NET ionic equation for the reaction when aqueous MgS0g and aqueous Ba(NO3)2 are…

A: The reaction is: MgSO4(aq) + Ba(NO3)2(aq) → Mg(NO3)2(aq) + BaSO4(s) Ionic reaction is: Mg2+(aq) +…

Q: Weight of filter paper = 0.756 g Weight of filter paper + barium sulphate precipitate = 0.990 g…

A: Result and Discussion: In this experiment, Gravimetric analysis is used to calculate the proportion…

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

A: Given: Weight of sample containing  Mg(NO₃)₂ and KBr =1.85 g The mass of the precipitate = 0.475 g…

Q: A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric…

A: Given: Sulfuric Acid is limiting reagent, 39.5 grams of barium sulfate are produced. Molar mass of…

Q: To determine the amount of iron in a dietary supplement, a random sample of 15 tablets weighing a…

A: Given that  Mass of Fe2O3 = 0.355g  Molar mass of Fe2O3 = 159.69 kj/mol

Q: A sample of potassium phosphate (K3PO4) is added to 15.0 mL of 0.050 M silver nitrate (AgNO3),…

A: Given: Molarity of AgNO3 = 0.050 M Volume of AgNO3 = 15.0 mL Molar mass of Ag3PO4 = 418.58 g/mol

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: How many grams of O2(g) are required to react completely with a piece of magnesium metal that…

A: Given data,  A piece of magnesium metal that measures 0.10 cm × 1.0 cm × 4.0 cm  Density of…

Q: A fertilizer railroad car carrying 34,300 gallons of commercialaqueous ammonia (30% ammonia by…

A: In order to calculate the amount of citric acid required to neutralize the spill we first write down…

Q: 16.792 g of Ba(OH)2 (171.342 g.mol) is weighed out and carefully dissolved to make a 500.00cm…

A: Provided amount of  Ba(OH)2=16.792g Molar mass of Ba(OH)2= 171.342g/mol Initially volume of solution…

Q: A 12.6 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid.If…

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

Q: A 4.534 g sample of a solid mixture was analyzed for baum ion. First the rock was crushed in a…

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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: When aqueous solutions of lead(II) ion are treated with potassium chromate solution, a bright yellow…

A: Given: Mass of lead nitrate = 1.00g Volume of potassium chromate = 25 mL Concentration of potassium…

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

A: 35 mL of Na3PO4 solution reacts with 35 mL of BaCl2 solution to produce 0.520 g of Ba3(PO4)2 .…

Q: solution is prepared by dissolving 37.3 g of potassium chloride in distilled water. What is the…

A: A) Molarity (M) = 2.0M Mass = 37.3 g Molar mass of KCl = 74.6 g/mol Mole = mass/molar mass    =…

Q: 16.792 g of Ba(OH)2 (171.342 g.mol') is weighed out and carefully dissolved to make a 500.00cm³…

A:

Q: An aqueous Na;PO, solution is made using 42.3 g of Na,PO, diluted to a total solution volume of 2.00…

A: Given :- Molar mass of Na3PO4 = 163.94 g/mol Given mass of Na3PO4 = 42.3 g Density of solution =…

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 chemical reaction is: Mg(NO3)2 + 2NaOH → Mg(OH)2 + 2NaNO3 1 mole of Mg(NO3)2 gives 1 mole of…

Q: mass of salicylic acid: 2.25g,  volume of acetic anhydride: 4.03mL, the mass of filter paper and…

A: The mass of filter paper and watch glass = 31.26 g Mass of filter paper and watch glass plus aspirin…

Q: You are given a dye stock solution which contains  0.200 g/L dye.  If you place 20.0 mL of stock in…

A: Given ,          Concentration of dye solution=0.200 gLit.            Also , 1 Lit=1000 ml   Since…

Q: The reaction of NaOH and HCl produces aqueous NaCl as a product.  You are assuming that the small…

A: Sodium hydroxide and hydrochloric acid are reacted to give sodium chloride which is salt and water.…

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

A:

Q: What is the molarity of toluene in a solution that is prepared by adding 57.9 g of toluene (C7H8)…

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Q: Gravimetric analysis of a mixture gives the percentage of a pure substance (either element or…

A: Given data,Density of water=1.029g/mLVolume of water sample=250mLMass of filter paper=1.058 gMass of…