A 0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were required to titrate the liberated ammonia. Calculate the percentage of nitrogen in the sample.

Q: A mysterious white powder is found at a crime scene. A simple chemical analysis concludes that the…

A: Since it is reaching equivalence point means that all the weak base (morphine ) has reacted with the…

Q: Predict the precipitate produced by mixing Al(NO3)3 solution with a NaOH solution. Write the net…

A: Aluminium nitrate reacts with sodium hydroxide to produce aluminium hydroxide as precipitate.

Q: It takes 91 mm² of overall surface area, in the form of a calcium-based substrate sheet, (CACO3…

A: Solution: Data Given- 91 mm² of overall surface area, (CaCO3 density=2.7 g/cm³)

Q: The protein content of wheat flour can be determined reasonably accurately by multiplying the…

A: Kjeldahl method is used for protein's quantitative analysis.

Q: Write the balanced NET IONIC equation for the reaction that occurs when ammonium nitrate and sodium…

A: In this question, first we will discuss about net ionic equation, and then Reaction classification…

Q: Preparation of EDTA solution: Mass of EDTA (g) : 1.9186 g Molarity of 500 mL solution of EDTA (M) :…

A: Molecular weight  of EDTA = 292.24g Given mass = 1.9186g No. Of moles of EDTA = (given…

Q: A sample of copper oxide weighing 2.013 g is dissolved in acid, the pH adjusted, and excess KI…

A: The solution of the question is given below:

Q: A 1.047 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

A: Given data contains, Mass of canned tuna is 1.047 g. Volume of HCl is 24.61 mL. Molarity of HCl is…

Q: A person suffering from hyponatremia has a sodium ion concentration in the blood of 0.118 M and a…

A:

Q: 1. If 8.5 g of pure ammonium phosphate, (NH₂),PO,(s), is dissolved in distilled water to make 400 mL…

A: Dear student , since you have posted multiple questions we are allowed to solve only first question…

Q: if 44.97 ml of an HCl solution is equivalent to 43.76 ml solution of  NaOH,   and if 49.14 ml of the…

A: Given: Volume of HCl= 44.97 ml Volume of NaOH= 43.76 ml  49.14 ml of the NaOH will neutralize…

Q: If 44.97 ml of a solution of HCl are equivalent to 43.76 ml solution of NaOH, and if 49.14 ml of the…

A:

Q: Upon heating, 48.6 mL of water was evaporated from 180. mL of 0.302 M C6H12O6(aq). What is the…

A: Given that,concentration of C6H12O6 = 0.302 M = 0.302 mol/Lvolume of the solution = 180 mL = 0.18…

Q: (a) devise a flow chart or schematic diagram to separate and confirm the presence of the given ions…

A: It is a method of identifying and classifying elements into a group from a solution provided through…

Q: An aqueous solution of NaCl is treated with an aqueous solution of Silver Nitrate. What would you…

A: Given that -  Aqueous solution of sodium chloride, NaCl  Aqueous solution of silver nitrate, AgNO3…

Q: 34. What volume of 0.782 M HCI is needed to neutralize 29.1 grams of Al(OH)3? 3 HCI (aq) + Al(OH)3…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is known as…

Q: Write a balanced chemical reaction for the oxidation of zinc metal with hydrochloric acid.  (The…

A: The balanced chemical equation of the reaction consists of equal number of atoms in both the…

Q: a) Calculate the molarity of AlCl3 if 0.220 mol AlCl3 is dissolved in enough water to make 0.500 L…

A: The moles of AlCl3 is = 0.220 mole The volume of solution is = 0.500 L The molarity of the solution…

Q: The density of acetic acid is 1.05 g/ml. * 10 ml of commercial vinegar was taken during titration…

A: Given: The density of acetic acid = 1.05 g/ml The volume of commercial vinegar taken = 10 ml The…

Q: For a tablet containing 1000 mg of vitamin C, calculate the minimum concentration of the NaOH…

A: Given that :  Mass of vitamin C = 1000mg = 1000mg×1g/1000mg = 1.00g Volume of NaOH used to…

Q: Suppose that 4 g of solid Fe2O3 is added to 25 mL of 0.5 M HClsolution.   What mass of Fe2O3 will…

A: Reaction of Fe2O3 with HCl take place as  Fe2O3  + 6HCl  ----->  2FeCl3   + 3H2O Given mass of…

Q: what mass of LIOH is required to remove 906.06 grams of CO2?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of CO2 = 44.01 g/mol  Molar…

Q: The equivalence point for the titration of a 25.00-mL sample of CsOH solution with 0.1062 M HNO3 is…

A: Given,

Q: All arsenic in the mineral containing 20 g of arsenic is dissolved by converting it into As3+.…

A: Working formula Decinormal = one tenth of normality = 0.1 N Normality = Molarity*no of equivalents…

Q: A certain solution of KMnO4 is being prepared to treat water and has a concentration of 14.50%…

A: Given: The solution of KMnO4 = 14.50 %(m/V).........(1).

Q: 1.3562 g of table salt was taken and dissolved in 250 mL of water. Calculate the % chloride amount…

A: The balanced equation for the reaction between NaCl and AgNO3 is   NaCl (aq) + AgNO3 (aq)…

Q: The titration of 0.9297 g of KHP (molar mass=204.227 g/mol) requires 41.02 mL of NaOH solution, What…

A: Given: Mass of KHP = 0.9297 g Volume of NaOH = 41.02 mL Molar mass of KHP = 204.227 g/mol

Q: A 0.917-g sample of canned tuna was analyzed by the Kjeldahl method. A volume of 20.59 mL of 0.1249…

A:

Q: If the absorbance of a solution of copper(II) ion decreases by 30.00% upon dilution, what volume of…

A: Absorbance of a solution is directly proportional to the concentration of the solution. On dilution,…

Q: How many grams of KMnO4 are required to prepare 4.000 L  of 0.0350 M  KMnO4 solution that is used in…

A: Calculation of no. of mol of KMnO4: Calculation of amount of KMnO4:

Q: A 280.5 mg sample containing only Pb3O4and inert matter gives a precipitate of PbSO4 weighing 381.5…

A: Given as The sample contains Pb3O4 as 280.5 mg The precipitate of PbSO4 weighing 381.5 mg The purity…

Q: What mass of Na2 CrO4 is required to precipitate all of the silver ions from 85.0 mL of a 0.300 M…

A: Given : molarity of AgNO3 solution = 0.300 M or 0.300 mol/L  Volume of AgNO3 solution = 85.0 mL  To…

Q: A

A: The  preliminary treatment of water involves the removal of the coarse solids in the wastewater.…

Q: What mass of solid Lanthanum (III) oxalate nonahydrate { Laz ( C2O4 )3 · 9 H2O } can be obtained…

A: Given data: The volume of the aqueous solution of LaCl3 = 650 mL = 0.650 L. The molarity of the…

Q: موعد التسليم السبت، 0 12:0 ص An impure sample of Na2SO4 weighed 1.562g . A BASO4 precipitate from…

A: The reaction is: Na2SO4+BaCl2→2NaCl+BaSO4 1 mol of Na2SO4 gives 1 mol of BaSO4 142.04 g of Na2SO4…

Q: weight of Mn

A:

Q: What mass of Na2CrO4  is required to precipitate all of the silver ions from 20.0 mL of a 0.700 M…

A: Given: Volume of AgNO3 = 20.0 mL = 0.02 L Concentration of AgNO3 = 0.700 M   Chemical reaction…

Q: weight of Mn ore

A:

Q: Describe a chemical method each for the preparation of the sols of sulphur and platinum in water.

A: Given: Sols of sulphur Platinum in water

Q: A piece of chalk (mainly calcium carbonate) is placed in 250. mL of 0.299 M HCl. All the CaCO3…

A: Number of mmols = molarity x volume (mL) Chemical equation for the reaction of HCl and CaCO3 can be…

Q: A 1.50 g sample of KCl is dissolved in 36.0 mL of water. The resulting solution is then added to…

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Q: The mass percent of chloride ion in a 25.00 mL sample of seawater was determined by titrating the…

A: 25. The balanced chemical equation  is  AgNO3 (aq) + Cl- (aq) → AgCl (aq) + NO3- (aq)

Q: What volume of 0.100 M Na3PO4 is required to precipitate all the lead(II) ions from 350.0 mL of…

A: First the balanced equation for reaction is determined. First, number of moles present in 350mL is…

Q: CaCin The calcium carbonate sample is heated in the oven for 30 minutes, cooled, and then weighed.…

A: The calcium carbonate (CaCO3) sample is heated in the oven for 30 minutes, cooled, and then weighed,…

Q: A standard solution of AgNO3 was prepared by dissolving 7.107 g of pure AgNO3 in sufficient water to…

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Q: 2. 2.00G of aluminum solid is added to a 100.0 mL of 2.5 M aqueous solution of hydrobromic acid. 2a.…

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Q: To determine the mass of calcium carbonate present in a 0.125 g sample of chalk, the chalk sample…

A: Acid-base titrations can be used to find the concentration of unknown acid/base by titrating it…

Q: A 1.362 g sample of an iron ore that contained FezOawas dissolved in acid and all of the iron was…

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Q: Describe the process of the solubility of ionic compounds?

A: Solubility is a property of a substance where a solid/liquid/gas solute dissolves in another…