What is the percent magnesium hydroxide, if a sample of magnesia magma weighing 5.2430g when dissolved in 25 mL of 0.9915 N H2SO4 required 9.85 mL of 1.4102 N NaOH to titrate the excess acid?  Round to 2 decimal point; Answer should be with the correct unit.

Q: A sample of caffeine is tested according to the FCC III: 824.11mg of caffeine requires 42.65mL of…

A:

Q: 30.0 g of K2Cr2O7 is completely dissolved in 50.0 g of hot H2O. This solution is then cooled to 20…

A: Mass of K2Cr2O7 = 30 g Mass of water = 50 g Mass precipitated out at 20°C = ?

Q: What volume (in L) of 1.5 M Na₂CO₃ would be required to obtain 0.90 moles of Na⁺ ions?

A: Dissociation of Na2CO3                                       Na2CO3  → 2Na++ CO3-2 From the above…

Q: Consider solutions prepared by (a) dissolving 8.00 mmol of NaOAc in 200 mL of 0.100 M HOAc. (b)…

A: Solution can resemble and can be different in their physical and chemical properties.

Q: A 1.787 g sample containing some Fe2+ ion requires 31.50 ml of a 0.02188 M KMnO4 solution to reach a…

A: We are given with,         31.5 mL of 0.02188 M KMnO4 solution. Let us find the Moles of KMnO4,…

Q: An impure sample of sodium carbonate had a mass of 0.852 g. It was dissolved in water and titrated…

A: Mass of impure sodium carbonate, Na2CO3 taken = 0.852 g

Q: 4H"lagCrSo + 2HOn 3.0x 10 Lof asolution. All of the chromate is removed and 2.94x 10 kgof the…

A: The question is based on quantitative estimation of concentration of chromate Ion present initially…

Q: What volume (in L) of 1.50 M Na₂CO₃ would be required to obtain 0.650 moles of Na⁺ ions?

A:

Q: Solubility Curves of Selected Compounds 150 140 130 120 110 100 NaNO 90 80 70 60 50 NHC KCI 40 Naci…

A: In this question, we want to determine the Solubility of Ammonium chloride ( NH4Cl )  How we can…

Q: hat volume of 0.500m cr2 (so4)3 solution is needed to react completely with 300. ml of 0.400 m…

A: Given molarity of BaCl2 = 0.400 M volume of BaCl2 = 300 ml molarity of Cr2(SO4)3 = 0.500 M

Q: If 0.3799 g  of sodium oxalate, Na2C2O4, requires of a 37.33 mL KMnO4 solution to reach the…

A: Given, Mass of sodium oxalate, Na2C2O4 = 0.3799 g Volume of KMnO4 solution = 37.33 mL = 0.03733 L…

Q: When zinc chloride (ZnCl2) reacts with NH3 solution, a white crystalline compound, Zn(NH3),CI2, is…

A: Given: Volume of HCl= 25.00 mL Concentration of HCl= 0.2500 M Mass of Zn(NH3)nCl2 =0.3724 g Volume…

Q: What volume, in milliliters, of 4.0 M NaOH is needed to prepare 145 mL of 0.15 M NaOH by dilution?

A: Given, The volume, in milliliters, of 4.0 M NaOH is needed to prepare 145 mL of 0.15 M NaOH by…

Q: What is the maximum volume of 0.25M sodium hypochlorite solution (NaOCI, laundry bleach) that can be…

A:

Q: atmosphere. Kb(chloroform) = 3.67 °C/m In a laboratory experiment, students synthesized a new…

A: First Calculate elevation in boiling point Then ∆Tb= mole of Solute×1000×kb/mass of solvent Mole =…

Q: 25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20…

A: The question involves estimation of sodium hypochlorite present in the given bleach sample . we do…

Q: 3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with…

A: Given, 1.100 g sample 31.4 ml of HCl

Q: What volume (in L) of 1.10M FeCl, would be required to obtain 0.550 moles of Cl ions?

A: We have to calculate the volume of FeCl3 required.

Q: A titrant of 1.0 M K2Cr2O7 was used for titration of 30 mL aqueous ethanol C2H6O solution and…

A:

Q: It is desired to prepare 500mL of 0.300 normal NaOH for use in the reaction:   HNO3 + NaOH = NaNO3…

A: Mass of NaOH needed can be calculated from volume and normality of solution.

Q: the bottle is labeled 174.3mg of Fe(NH4)2(SO4)2•6H2O in 1.000 liter, what is the concentration in…

A: The parts per million unit is equal to the milligrams per liter. 1 ppm=mg/L Molar mass of…

Q: 16. A 1.2 gram of procaine hydrochloride drug (molar mass = 373 g/mole). If the volume of added…

A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

Q: How many grams of disodium EDTA (mw=336g/mol) is required to prepare 200 ml of 0.02150 M of Aluminum…

A: Given: Mol. weight of EDTA = 336 g/mol Volume of Aluminum oxide = 200 mL Mol. weight of Aluminum…

Q: calculate the mass CuSO4*5H2O required for preparation of 100ml of 0.010 M Cu2-

A:

Q: What is the concentration of F— ions when 422.569 mg of MgF2 (62.3018 g/mol) completely dissociates…

A:

Q: When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with…

A: we will establish the stoichiometric relation between the reactant and product

Q: what Volume ( in L) of 1.1 M FeCl2 would be required to obtained 0.70 moles of CL- ions?

A: By balancing the reaction between FeCl2 and Fe2+ and Cl1- we can calculate the volume of ferrous…

Q: Prepare 20 mL of~1 M CaCl2. Because the CaClz solution will be used as an excess reagent to prepare…

A: Density= Mass / Volume So, Mass = Density * Volume Mass of water = 1 g/mL * 20 mL = 20 g Mass of…

Q: A solution was prepared by dissolving 0.000245 Kg of H2SO4 in water to give 500 ml. Calculate he…

A:

Q: 3.A sample is known to contain NaOH, NA2CO3 NaHCO3 or compatible mixture of these together with…

A: a) 2Na2​CO3​+2HCL⇌2NaHCO3​+2NaCL b) 2NaHCO3​+2HCL​⇌2NaCL+2H2​CO3​

Q: Determine the concerntration of a solution prepared by diluting 50.0 mL of a stock 0.500 M Ca(NO3)2…

A: We know, Vinitial x Sinitial = Vfinal x Sfinal where, Vinitial = initial volume of the solution…

Q: What volume of 0.0500 M CoCl2 times 6H2O is required to react completely with 75.0 mL of 0.0500 M…

A: The balanced chemical reaction between the two given compounds can be shown as follows:

Q: 12. a. What is the molarity of a solution made by mixing 125 mL of 5.00 M H3PO4 with 325 mL H2O? b.…

A:

Q: Determine the percent yield when .537g of sodium acetate is obtained from mixing 15.0g of NaHCO3…

A:

Q: Ammonia reacts with hypobromite, OBr- as follows: 2NH3      +    3OBr-    →    N2  + 3Br-  + 3H2O…

A: Molarity is defined as total number of solute present in 1000 ml of solution . For neutralisation we…

Q: A chemist attempts to prepare some very pure crystals of borax by dissolving 100g of Na2B4O7 in 200…

A:

Q: What volume (in L) of 1.20 M FeCl2 would be required to obtain 0.780 moles of CI" ions?

A: The given data contains, Volume V1=600 MLMolarity M1=0.455MVolume V2=900 ml

Q: Calculate the mass needed to prepare 263.0 mL 0.50 M NaOH ?

A: Given data Molarity of desired NaOH solution = 0.50 M Volume of the desired solution , V = 263.0 mL…

Q: Mass of H2C2O4•2H2O = 1.3245 grams  Molar Mass of H2C2O4•2H2O = 126.07 Volume of H2C2O4•2H2O…

A: Number of moles = Mass in gram/Molar mass in gram per mole Molarity = Number of moles/Volume in L…

Q: Sodium hydroxide solution was standardized against one gram of potassium phthalate. First trial used…

A: Given , mass of potassium phthalate  = 1g

Q: 1. What mass of solid Lanthanum (III) oxalate nonahydrate {La2 ( C204 )3 · 9 H2O } can be obtained…

A: A part of chemistry that defines the relation between the amount of reactant and products is named…

Q: One milliliter of a certain KMnO4 solution will completely react with 0.3400 g FeSO4: Fe2+ + MnO4…

A: The balanced reaction can be written as MnO4-+5Fe2++8H+→5Fe3++Mn2++4H2O 55.8 g/mol is the molar mass…

Q: In the chemical storeroom, you run into a problem. Your boss, Meany McMeanFace, needs everything…

A: The question is based on the concept of solutions. we have to identify the solute present in the…

Q: A 0.42 gram sample of acetylsalicylic acid (C₉H₈O₄, aspirin) is crushed and dissolved in water. The…

A:

Q: When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with…

A: Given data,Molarity of KIO3=0.0340MVolume of KIO3=29.80mLMolar mass of ascorbic acid=176.12g/mol

Q: A 14.00 mL sample of sulfuric acid is diluted to 50.00 mL. A 10.00 mL aliquot is titrated to a…

A:

Q: How much 1.0 M sodium bicarbonate solution (in mL) is needed to stoichiometrically react with 25 mL…

A: Given that -  Molarity of sodium bicarbonate Solution = 1.0 M  Volume of acetic acid = 25 mL  Weight…

Q: How many liters of .225 M Na2S solution would be required to react completely with 81.8 g…

A: Given: Molarity = 0.225 M     Fe (C2H3O2)3 = 81.8 g Volume of solution is calculated as