How many microliters of a 857.0 ppm Co²+ stock solution are required to prepare 20.00 mL of a 18.0 ng/µL Co²+ solution? Significant figures are graded for this problem. Be sure you do not round your answers until the very end of your calculations.

Q: A solution contains 4.1 x 10-4g of CI per kilogram of solution. What is this in ppm? Answer to 2…

A: We have given that  1.A solution contains 4.1 x 10-4 g of Cl- per kilogram of solution. What is this…

Q: How many milliliters of liquid is needed to make 500 milliliters of a 3% solution?

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Q: A sample of a potential pharmaceutical is being tested for effectiveness at different dosages. 250.…

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Q: What would be the percent by volume and proof of an ethanol solution containing 70 mL alcohol in 250…

A: Given data,  Volume of ethanol = 70 mL  Volume of ethanol solution = 250 mL  Here,  Solute of the…

Q: What would you expect to see if you were to create a solution that has 35.0 grams of the NaCl and…

A: The property of any salt to get dissolved in water or generate an aqueous solution is known as…

Q: Calculate the number of mmoles of solute that are present in 4000 cm³ of an aqueous solution that…

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Q: A particular water sample that is saturated in CaF2 has a Ca²+ content of 105 ppm (that is, 105 g…

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Q: Calculate the number of mmoles of solute that are present in 4000 cm³ of an aqueous solution that…

A: Given, AgNO3 concentration = 5000 ppb density of solution = 1gmLmolar mass of AgNO3=169.87…

Q: How many milliliters of a 0.340 M KOH solution contain 1.75x10-2 mol of KOH? Express your answer to…

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Q: (NH),CO) NH,) CO are dissolved in 600. g of X, it is found that the solution The normal freezing…

A: Normal freezing point of X, Tf° = 6.1 °C Mass of solute (urea), wB = 44.3 g Molar mass of solute…

Q: Calculate the volume in milliliters of a 0.16/molL potassium dichromate solution that contains…

A: Given: Molarity of potassium dichromate solution = 0.16 mol/L Mass of potassium dichromate solution…

Q: Calculate the percent mass per volume, % (m/v), of a dextrose solution containing 6.50 g of dextrose…

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Q: A 100.0-mL aqueous sodium chloride solution is 14.2% NaCl by mass and has a density of 1.12 g/mL.…

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Q: A 1000ml liquor beer is 36% alcohol by volume. Find the proof of the solution.

A: Given information,     A 1000ml liquor beer is 36% alcohol by volume

Q: 139.1 mg of NaCl (MM=58.44 g) is dissolved in 373.08 L of water. What is the concentration of Na+…

A: We have given that  139.1 mg of NaCl is dissolved in 373.08 L of water. What is the concentration of…

Q: "Determine the molarity of a solution that contains 15.50 mL of glycerol C3H8O3, d = 1.265 g/mL) in…

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Q: Calculate the number of moles and mass of CuSO4·5H2O(s) required to prepare 100.0 mL of 0.100 M…

A: Calculate the number of moles of CuSO4·5H2O: 1 mL = 0.001 L Hence, the number of moles of…

Q: Which of standard substance (or standardized solution) is correct for standardization of I2: As2O3;…

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Q: prepare 150 mL of a 3% salt solution from a 3% salt solution.

A: Answer:- The concentration of stock solution is same as the given solution. So, 3% solution of 150…

Q: alculate the mass percent of a solution made from 15.5g of NaCl and 375.4g of H2O. Please be sure to…

A: When solute and solvent are mixed, they form a solution.

Q: How many liters of commercial 5% bleach solution would be used to prepare 50L of 1% bleach solution?…

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Q: How many milliliters of a 2.00% KCl solution are needed to provide a patient with 5.00g of KCl?

A: Concentration of has been defined in many units like molarity, molality, ppm, m/v %, V/V %.…

Q: Calculate the milliliters of an 8.0% (v/v) ethanol solution that contains 20.0 mL of ethanol.

A: Given information:Volume of ethanol (solute) = 20.0 mL8.0 % (V/V) ethanol solution

Q: What would you expect to see if you were to create a solution that has 20.0 grams of the NaCl and…

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Q: How many grams of manganese acetate tetrahydrate, Mn(C2H4O2)2 x 4H2O, do you need to prepare 2…

A: Given information: Concentration of solution in ppm = 1000 ppm Volume of solution = 2 L

Q: A solution is 21.4% (v/v) Br2 and has a density of 1.18 g/mL. What mass of this solution is needed…

A: Given,  Density of solution = 1.18 g/mL  21% (v/v) is Br2 in the solution .  Total amount of  Br2 in…

Q: How do I calculate the mass (g) of solid needed to prepare 250.00mL of 550. ppm stock solution?…

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Q: What is the concentration in %% (m/vm/v) of a solution containing 0.28 gg of glucose and 50 mLmL of…

A: Concentrations depicted in mass/volume gives an idea of how much solute (g) is present in solution…

Q: you are given 15ug/ml atrazine to prepare a 3 ppb solution  a. use te terms working and stock to…

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Q: How can you prepare 250 ml, 0.1N HNO3 solution from 35% HNO3      and 1.26 g/cm3  density?

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Q: 1. a. Potassium permanganate produces a saturated solution at .480M concentration.  How many grams…

A: Given here a) the Potassium permanganate produces a saturated solution at =0.480 Mvolume of solution…

Q: Find the boiling point (Tb) of a solution containing 15.0 g salt (NaCl) dissolved in 750 g water

A: We're asked to find the expected boiling point elevation of a solution given the amount of solute…

Q: 20. Concentrated ammonium hydroxide is 29.0%mass ammonium hydroxide. How much of the concentrated…

A: Given information: mass % of ammonium hydroxide in solution is 29.0%. mass % of ammonium hydroxide…

Q: Diluted solutions Solution 1 Solution 2 Solution 3 Volume stock solution (mL) 4.00 4.00 4.00 Volume…

A: On dilution concentration changes but no of moles remain same. So, M1V1 = M2V2 M1 = Molarity of…

Q: Calculate the number of mL of a 500ppm solution needed to prepare 100mL of a 50 ppm solution.

A: Given:Concentration (C1) = 500 ppm.Volume (V2) = 100 mL.Concentration (C2) = 50 ppm.

Q: Define the following: 1. solvent 2. mixture 3. solution

A: (1) Solvent -  Solution is formed by combination of atleast two Substances, one of them has higher…

Q: If a 1000ml liquor beer is 36% alcohol by volume, how many ml of the solution are ethanol? Find the…

A: Given, Volume of the solution (liquor Beer) = 1000 ml 36% alcohol by volume  Formula Used,…

Q: Calculate the amount in grams of CaCl2 needed to make 250 mL of a 20 mM CaCl2 solution.

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Q: Thirty milliliters of ferrous ammonium sulfate solution contain 1.176 grams of pure…

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Q: Calculate the mass of KI in grams required to prepare 5.00 × 102 mL of a 2.80 M solution.

A: *   Concentration = No. of molesVolume of solution (L)* Number of moles = weightMolar massMolar mass…

Q: Please answer all parts or leave for someone else. Convert the following units of solution…

A: a). 1 ppm = 1000 ppb Therefore 100 ppm = 100 × 1000 = 1.0×105 ppb Answer: 1.0×105 ppb

Q: Isopropyl alcohol is mixed with water to produce a 33.0% (v/v) alcohol solution. How many…

A: The total volume % of the alcohol solution = 100% The volume % of isopropyl alcohol present in the…

Q: A particular water sample that is saturated in CaF2 has a Ca²+ content of 105 ppm (that is, 105 g…

A: Given: The Ca2+ content of the water sample that is saturated in CaF2 = 105 ppm We have to calculate…

Q: How many grams of Sucrose solid do I need to make 20ml of 20% Sucrose solution?

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Q: An 12% strength bleach solution is created, when 4L of water is evaporated away from a 8% bleach…

A: Initial strength of bleach = 8%  Final strength of bleach is 12% after evaporated 4 L of water from…

Q: How to solve for freezing point depression given 10.3 g of glucose dissolved in 250 g

A: Given, Mass of glucose = 10.3 g Mass of water = 250 g Kf = 1.86 oC/m (from literature available on…

Q: Calculate the mass of a 400.0 ml solution with a density of 1.5g/ml

A: density (d) is the ratio of mass of substance (m) to volume of solution (V) Density (d) = mass (m) /…

Q: If we measure 27.5mL of 2.50 molar Na2Cr2O7 solution, how many grams of sodium are present?

A: GivenMolarity of Na2Cr2O7 = 2.5 M ( mol/L )Volume of solution = 27.5 ml = 27.5 x 10-3 LMolar mass…

Q: What is the volume in milliliters of a 85% (v/v) rubbing alcohol solution that contains 15 mL of…

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.