An impure sample of table salt that weighed 0.8421 g when dissolved in water and treated with excess AgN03 formed 2.044 g of AgCl. What percentage of NaCl is in the impure sample?

Q: A sample of concentrated nitric acid has a density of 1.41 g/mL and contains 70.0% HNO3 by mass. (a)…

A: Given: Mass % of HNO3=70.0 % Density  = 1.41 g/mL   To calculate: (a) Mass of HNO3 per liter (b)…

Q: A sample of hydrated nickel(II) chloride was heated to remove the waters of crystallization. The…

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Q: You use 500.0g of a solid to prepare a solution that has a concentration of 7.40% by mass. What is…

A: Given: Mass of solid solvent = 500.0 g. Concentration of solid in %(m/m) = 7.40 %

Q: calculate the percentage purity of Na2CO3

A:

Q: The hydrated salt, MY2·xH2O, was heated strongly in a crucible to remove all the water molecules of…

A: (i) Calculation of mass of hydrated salt: Calculation of mass of anhydrous salt: Mass of water in…

Q: Which produces an electrically conductive solution when dissolved in water? A) CaCl2    B) CCl4…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Muriatic acid, an industrial grade of concentrated HCl, is used to clean masonry and cement. Its…

A: Given , Concentration of muriatic acid = 11.6 M Diluted solution of muriatic acid , concentration =…

Q: If we diluted 12.5 mL of a solution to 500 mL, and its molarity is determined to be 0.125. What is…

A: ***Note:- its molarity is determined to be                                0.125 M ( unit is missed…

Q: 2.) Calculate the mass of (NH4)2CO3 and water needed to make 175. g of a 15.7 % solution?

A: Given: Mass percentage = 15.7% Mass of solution = 175g

Q: 1. a) 5.62g of LIOH is dissolved and made up to the mark in a 500.00ml flask. Calculate the molarity…

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Q: A solution is prepared by dissolving 2.86 g KMnO4 in 75.0 mL of water. (Density H₂O = 1.00 g/mL).…

A: Mass percent is calculated using the mass of solute and total mass of solution .

Q: A 500 mg sample contains FeCl3 and MgCl2. Ammonia was added to the sample to precipitate the…

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: To make 1.00 L of 1.00 M NaOH solution, what mass of NaOH needs to be weighed out?

A: 1 M NaOH solution means 1 mole NaOH is present in 1000 mL means 1 L solution.

Q: What is the molarity of a solution prepared by dissolving 4.20 g NaF in enough water to make 0.400 L…

A: Molarity is defined as  Molarity = moles of solute / volume of solution in L  Since volume of…

Q: oluene 1C7H82 weighs 5.0 g and benzene weighs 225 g in a solution with a density of 0.876 g/mL. The…

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: (ii) Calculate the moles and mass of Zn(NO3)2 in 29.3 cm3 of 0.952 moldm solution Relative formula…

A:

Q: What mass, in grams, of a solution containing 5.00% by mass of potassium iodide, KI, contains 308.00…

A: Given data : % by mass = 5.00 % Mass of KI = 308.00 mg = 0.308 g (1000 mg = 1g)

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: Given :- volume of solution = 350 cm3 molarity of potassium dichromate solution = 5.16 M or 5.16…

Q: Five different solutions were prepared in the laboratory. One was prepared by dissolving 7.1 g…

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Q: What mass of a concentrated solution of nitric acid (68% HNO3 bY mass) is needed to prepare 400 gram…

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Q: Calculate the sodium hydroxide (MW = 39.997 g/mole) concentration in units of moles per kilogram of…

A: The solution is as follows:

Q: What mass of benzoic acid (122.12 g/mol) is needed to prepare 100.0 mL 75.0 mM benzoic acid…

A:

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: We know that, molarity is an unit of concentration. It is defined as the number of moles of solute…

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A:

Q: An unknown amount of barium nitrate is dissolved in 120.0 g of water and 8.15 g of copper (II)…

A:

Q: A solution is prepared by dissolving 20.0 g of NH3 in 255.0 g of water. The density of the resulting…

A: Given, MSolute of NH3 = 20.0 g MSolvent of water= 255.0 g MSolution  = 275.0 g DSolution  = 0.974…

Q: hat is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3 solution…

A: Given : Volume of solution =  350 cm3  Concentration = 5.16 M

Q: 750 g potassium iodide Oral Potassium 237 mL per 950 g elemental iodine + 1.5 kgs potassium…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 10.00 mL of solution…

A: The dilution series is shown as follows:

Q: What are the molarities of the following solutes? a. Urea, CO(NH2)2, if 98.3 mg of the 97.9% pure…

A: The molarity of a solution is calculated by the formula: M=nM×V Where, n is the number of moles. M…

Q: What is the volume of concentrated HCl  to make 100 mL of 0.10 M HCl? ( density of concentrated HCl…

A: Molarity of the desired HCl solution, C = 0.10 M or 0.10 mol/L  Volume of the desired HCl solution,…

Q: An unknown mass of Na;PO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A.…

A: SOLUTION: Step 1: 1 mole of Na3PO4 contains 3 moles of Na+ ions. 20 mL of solution B contains 4.408×…

Q: A sample of 10 ml of a solution of KBr has a mass of 12.60g. When the solution evaporates, the…

A:

Q: Calculate the molarity of each of these solutions.

A: Step : 1           Calculate the molarity of each of these solutions.

Q: What percent of NaCl is in the impure sample?

A: Given: Mass of AgCl = 2.044 g Mass of impure table salt (NaCl) = 0.8421 g Molar mass of AgCl =…

Q: To what final volume (L) would you dilute 25.00 mL of 0.250 M NaCl to make a 1.00 × 10-4 M solution?

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Q: Calcuate the volume (in mL) of 0.200 M CaCl2 needed to produce 2.00g of

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Q: How many grams of CaCl2CaCl2 are needed to make 623.4623.4 g of a solution that is 36.036.0% (m/m)…

A:

Q: Solve the attached

A: Given data: Number of sodium ions = 4.408*1020 Dilution does not affect the moles of solute.

Q: The correct amount of KF and of water that must be mixed to prepare 225 grams of a 4.18% by mass…

A: Mass of KF is calculated as follows: Mass % = Mass of the solute KFMass of solution×100 %4.18 % =…

Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: Mass can be find by using the formula of concentration.   Just put the values of given quantities,…

Q: A 0.755-g sample of hydrated copper(II) sulfate (CUSO4•NH2O) was heated until it lost all the water…

A: Given: Mass of CuSO4.nH2O taken = 0.755 g And mass of CuSO4 produced after heating = 0.483 g Molar…

Q: Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Mg(NO3)2…

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

A: The number of moles of Na3PO4 in the 20.00 mL of the solution B is calculated as shown below.

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

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Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A:

Q: A solution is prepared by dissolving 125 g of NaCl in enough water to make 780 mL of solution.…

A:

Q: The hydrated salt, MY2 XH2O, was heated strongly in a crucible to remove all the water molecules of…

A: Calculation of mass of hydrated salt: Calculation of mass of anhydrous salt: Mass of water in the…

Q: What is the mass percent of solute for: a.7.6 grams…

A: Mass percentage is defined as the total mass of the substance(solute) divided by total mass of the…

Q: acetic acid (CH3COOH), known as glacial acetic acid, is a liquid with a density of 1.049 g/mL at 25…

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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.