Using the equation for the calibration curve below calculate the concentration of a CUSO4 solution with absorbance reading of 0.422 at 620 nm. (Hint: In this equation y represents the absorbance and x the concentration of the solution in M.) Calibration Curve for Copper(II) Sulfate at 620 nm

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A: Calculate hydronium ion concentration of the folowing---

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A: Here we are required to find the concentration of HCl solution .

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Q: drogen peroxide (H₂O₂) is used in commercial tooth whitening products where the H₂O₂ concentration…

A: Mass percentage = 10% Density = 1.45 g/mL Molar mass of hydrogen peroxide = 34.0147 g/mol

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A: Given: Mass of empty 50 mL beaker = 52.5 g Mass of beaker + unknown solution = 66.55 g Drops of NaOH…

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A: Initial volume of HCl= 238.6 mL Initial concentration of HCl = 3.6 M Final concentration of HCl =…

Q: What is the solution of 17in to cm?

A: 1 inch is equal to 2.54 cm.

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A: Given data is as follows: The Molarity of the hydrochloric acid  M1=3.00 M The volume HCl = 5.54 mL…

Q: A student weights out 3 samples of KHP to standardize a NaOH solution and added 100 mL to each…

A: KHP is used as primary standard because it is stable, not evaporated and air stable.

Q: Calculating 12.49 mg. KI in 104.5mL of solution

A: Molarity is the ratio of moles of solute to volume of solution in litres.  Molarity=no. of moles of…

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Q: On a balance mass an amount of potassium hydrogen phthalate (KHP) needed to neutralize approximately…

A: KHP is Potassium Hydrogen Phthalate. Molarity of NaOH = 0.1M  Volume of NaOH solution. = 12 mL =…

Q: How many moles of nitic acid, HNO3, are present in 426 mL of a 0.921 M nitric acid solution?…

A: Since moles of solute = molrity X volume of solution in L Volume of solution given = 426 mL = 0.426…

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Q: Water is added to 135ml of a 2.45M KOH solution to give a final volume of 285 mL.What is the final…

A: Water is added to 135 ml of a 2.45M KOH solution to give a final volume of 285 mL. The final…

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A: Since you have posted multiple questions, according to guidelines I am solving first one.If you want…

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A: Given information: Initial volume (V1) = 22.64 mL Final volume (V2) = 1.25 L Initial concentration…

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Q: Let’s say you had a 3.45 M solution of salt and you diluted it. What would you do to dilute it? What…

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