Show the calculation that you will use to prepare 5 mL of 200 mM stock solution of cobalt (II) chloride in distilled water. The molecular weight of cobalt (II) chloride hexahydrate (CoCl2 6H2O) is 237.93 g·mol-1.

Q: a)How many milligrams of mercury(I) chloride (Hg2Cl2) must be present in a 288 mL sample of water to…

A: Given: volume of solvent (water)=288 mL ppm (m/v) of Hg2Cl2 = 4.40 ppm To find: mass of solute…

Q: Calculate the mass of KI in grams required to prepare 5.00 x 103 mL of a 2.80 M solution. [KI = 166…

A: It is given that the molarity of the KI solution is 2.8 M and the volume of the KI solution is…

Q: What is the mass in milligrams of solute in 356 mL of a solution that contains 2.96 ppm of Pb(NO3)2?

A: Given :-  Volume of solution = 356 mL  Concentration of solution = 2.96 ppm  To calculate :-  Mass…

Q: What are the normality and molarity of a solution prepared by dissolving 8.050g Ba(0H)2 · 8H,0 in…

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

Q: What is the molarity of a barium chloride solution prepared by dissolving 9.9 grams of BaCl2•2(H2O)…

A: Molarity = (Mass/molar mass)(1000/V(ml)).Mass = 9.9g.Molar mass = 244.26g/mol.Volume = 151.0ml.

Q: Express as % solution: 2.85 g of sodium chloride in 60 mL of water

A: Given : mass of NaCl = 2.85 g And volume of solution = volume of water = 60 mL…

Q: Calculate the mass of HNO3 in grams required to prepare 5.00 x 102 mL of a 1.50 M solution.

A: Given that : The volume of the solution (V) = 5.00×102 ml = 0.5L Molarity of the solution = 1.50 M…

Q: What is the number of equivalents of sodium in 0.806 moles of Na3PO4(aq)?

A: Number of equivalent is the multiplication.of Mole and nfactor. nfactor for salt is the charge on…

Q: What is the molarity of glacial acetic acid ( CH3COOH, Mr =60.05 g/mL ) at 25 degrees Celsius given…

A: Molarity = number moles  x 1000/V in ml Number of moles = mass of substance /molecular mass of…

Q: A student placed 11.0 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve…

A: Molatity (M) is defined as the number of moles of solute per volume of the solution in litre, i.e.…

Q: What is the concentration of an aqueous sucrose solution that is prepared by dissolving 171.2 g of…

A:

Q: Given a 3.59 M solution of magnesium nitrate, Mg(NO3)2, whose density is 1.2 g/ml, determine its…

A: Molarity = moles/ volume in L Molality = moles / mass of solvent on kg

Q: What is the molarity of a barium chloride solution prepared by dissolving 2.50 g of BaCl2 x 2H2O in…

A: It is required to calculate the molarity of BaCl2.2H2O in a 400 ml (0.4 L) solution. This can be…

Q: Which of the following is NOT soluble in water? O acetic acid, the active ingredient in vinegar,…

A: We have to predict the substance insoluble in water.

Q: 11.A sample of 10 g of potassium iodide is dissolved in a beaker. Then it is poured in a volumetric…

A: Given : A sample of 10 g of potassium iodide is dissolved in a beaker. Then it is poured in a…

Q: What is the molarity of a CaCl2 solution prepared by dissolving 145 g of CaCl2 into a total volume…

A: Molarity is used to express the concentration of a solution and it is the no of moles of solute per…

Q: A solution contains 117 g of potassium hydroxide, KOH, dissolved in sufficient H2O to give a total…

A: Definition: Molarity is a concentration term for a solution. The molarity of a given solution is…

Q: What mass (in grams) of Mg(NO3)2 is present in 200 mL of a 0.500 M solution of Mg(NO3)2?

A: The mass is determined by using molarity formula. The molarity is expressed as follows,

Q: In biochemistry laboratories, solutions of sucrose (table sugar, C12 H22 O11) are used in high-speed…

A: Given concentration of sucrose = 3.30 M  And 135 g solute is given...

Q: Acetonitrile 1CH3CN2 is a polar organic solvent that dissolves a wide range of solutes, including…

A: Density It is defined as mass per volume. It is represented by the formula. Density=massvolume Mass…

Q: Calculate the mass, in grams, of MgSO3 required to prepare exactly 100 mL of a 0.760-M solution of…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: An aqueous solution of manganese (II) iodide,MnI2,is made by dissolving 21.1 grams of manganese(II)…

A: Weight/Volume percentage = it tells about amount of solute present per 100 mL of solutionWeight of…

Q: How many grams of solute are present in 235 mL of 0.680 M KBr?

A: Given: Molarity of KBr solution = 0.680 M Volume of KBr solution = 235 mL = 0.235 L (because 1 L =…

Q: You wish to prepare a solution that is 12% sodium chloride by mass (m/v%). How much sodium chloride…

A: For preparation of particular solution, the weight of solute and volume of solution must be known.…

Q: An ethanol-water solution has been prepared by dissolving 10 mL of ethanol (d=0.789 g/mol) in a…

A: Given:- Volume of ethanol = 10 mL Density of ethanol = 0.789gml Volume of solution = 100 mL Density…

Q: 1. What are the normality and molarity of a solution prepared by dissolving 8.050g Ba(0H)2· 8H20 in…

A: Molar mass of Ba(OH)2 . 8H2O = 315 g/mol  Volume = 1500 ml = 1.5 L

Q: 2. The concentration of NH4CI solution (aqueous solution) is 33.5% by mass. If the mass of solution…

A:

Q: By separating mixtures by evaporation, how do I get the percentage mass of NaCl in the solution?…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: What is the molarity of a barium chloride solution prepared by dissolving 6.3 grams of BaCl2•2(H2O)…

A:

Q: 2. The mass of CaCl₂ that needed to prepare 250 mL of 0.2 M solution of Calcium Chloride is equal

A:

Q: What mass of salt (NaCI) in grams (g) is required to prepare 2.552 L ofD51/¼NS solution? Give your…

A: Given that : The volume of D514NS solution = 2.552 L We have to calculate the mass of NaCl required…

Q: How many grams of solute are required to prepare 250 ml of 8% (W/W) Mg(NO3)2 solution

A: The concentration of a solution is the amount of solute present in  given solvent. The concentration…

Q: Calculate the mass in grams of solute needed to prepare 100 mL of a 0.597 mol/L solution of…

A:

Q: Calculate the mass of NaOH in 150 cm^3 of a 0.1M solution provided.

A: no of moles = mass/molar mass molarity= no of moles of solute/volume of solution in liter molarity…

Q: An aqueous solution of sodium fluoride, NaF, contains 1.16 grams of sodium fluoride and 17.5 grams…

A:

Q: Calculate the mass of nickel(II) sulfate required to prepare 425 mL of a 0.0289 mol/L solution.

A: MASS: The estimated value of the quantity of matter in any object or a substance is known as mass.…

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

A: Percentage of solution can be determined by dividing the mass of the soluteby the mass of the…

Q: What is the mass/volume percent (% w/v) of potassium chloride in a 0.335 M aqueous potassium…

A:

Q: the mass percentage of NaCl in a solution containing 1.50 g of NaCl in H2O ?

A: Given: Mass of NaCl (solute) =1.50g Mass of water (solvent) =50.0g To find: The mass percentage of…

Q: If 1.5 g of potassium dichromate (K2Cr2O7) is used to prepare a standard solution in a 250 mL…

A: Solution:    Molarity is the measure of the concentration of species.The amount of solute present…

Q: Chemical analysis of a 45 mL sample of water from the Great Salt Lake shows that it contains 1660.5…

A: Molar concentration or molarity can be expressed as the number of moles of solute per volume of the…

Q: What mass of copper(II) nitrate, Cu(NO3)2, is present in 50.00 mL of a 4.55 × 10-3 M aqueous…

A: Given question is very basic and simple as well, because every data is provided like concentration…

Q: ethylene glycol

A: Molarity is defined as moles of solute to the volume of solution. Molarity calculation formula:

Q: The density of an aqueous solution containing 40.0% sulfuric acid (H2SO4) by mole is 1.681 g/mL. b)…

A:

Q: Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to…

A: Molarity: The concentration for solutions is expressed in terms of molarity as follows,

Q: Which of the following do not appear as concentrations in the expression for Kc? a) solids b)…

A:

Q: Determine the volume of 0.116 M Li3PO4 and 0.0871 M Mg(C2H3O2)2 solutions needed to form 135 g of…

A: Number of mols = volume in L × concentration in M Number of mols = weight / molecular weight

Q: Concentration of NaOCl in Full-strength Commercial Bleach:   A diluted bleach solution was found…

A: Given that : Concentration of the diluted bleach solution = 0.0284 M The volume of original solution…

Q: If 3.7 g of CuSO4 is dissolved in 5.0 x 101 g of H2O, what is the mass percent of CuSO4 in the…

A:

Q: If the solubility of NaCl in water is 35.7g NaCl / 100g H2O, what is the minimal volume of water…

A: