Determine phosphate concentration of a water sample using the following information: Standard curve- slope: 1763.2 y-int: 0.011806 R^2: 0.99181 Absorbance of water sample: 0.013

Q: Solution )100 mL 0.02M potassium permanganate potassium permanganate Mw = 158.03 g mol-1 potassium…

A: Use the molarity formula to calculate moles and the mass of a potassium permanganate.

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A: Sample is a substance that contains all the important and useless components.  Analyte is the…

Q: (Solution AII) Prepare 25.00 mL of ~0.05000 M copper (II) acetate solution from your ~ 0.1250 M…

A: To prepare the desired solution, we first need to calculate the volume of the stock solution…

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A: A numerical problem based on calibration curve that is to be accomplished.

Q: Part IlI: Determination of Saturated Solutions

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Q: A series of five standard copper solutions are prepared, and the absorbances are measured as…

A: Here we are required to find the concentration of unknown copper from the absorbance versa…

Q: Sample (μg) Absorbances (520 nm) Concentration 0.0 0.621 0…

A: X-axis(Concentration) : 0, 2.5, 5, 10, 15, 20Y-axis(Absorbance) : 0.621, 0.599, 0.556, 0.469, 0.418,…

Q: From the water sample analysis: 40 mg/L Ca+2, 5 mg/L Mg+2, 10 mg/L K+, 10 mg/L SO4-2, and alkalinity…

A: Hardness is the term often used to characterize a water that doesn't form a foam or lather well and…

Q: Given the following standard curve of Absorbance vs Concentration (mM), what in the concentration of…

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Q: Calculate the bulk density of a 130 cm3 soil sample with an oven-dry weight of 160 g

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Q: 7) The homogeneity of the chloride level in a water sample from a lake was tested by an analyst.…

A: The homogeneity of the chloride level in a water sample from a lake was tested by an analyst.

Q: ) The refractive index (μ) of water is found to have the values 12.9,12.5,12.3 and 11.8. Calculate…

A: The question is based on the concept of analytical treatment. we have been given refractive indices…

Q: to one of the followin

A: Cefuroxime is an antibiotic and is a type of second generation cephalosporin and used for treatment…

Q: Dr. Caras was characterizing a cytochrome (an iron containing protein) from a new strain of…

A: First calculate mean (μ) of 8 measurements. Sum of all measurements = 2.5719 Mean of all…

Q: A student is asked to prepare 45.0 mg of a sample to be used in a mixed melting point test. The…

A: Given, Mass of the sample needed to be prepared = 45.0 mg % of A in the sample = 65.0 % % of B in…

Q: se the following data to construct a standard curve for methylene blue.  Using Beer's Law,…

A: Here we are required to plot the data for Beer Law

Q: Dr. Caras was characterizing a cytochrome (an iron containing protein) from a new strain of…

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Q: What makes a mixture of soap or some other detergent and water such an effective cleaner? There may…

A: A question based on micelles. A statement followed by 4 options are given from which the most…

Q: How to prepare the solutions listed below Solution 1) 25 mL 7 M sulfuric acid and the respective…

A: Molarity (M) is the number of moles of solute present in per liter of the solution.  Its unit is…

Q: Using the percent purity calculations, determine the percent yield of synthesis of aspirin.…

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Q: After water and benzene are mixed, we see two layers. A True False

A: After water and benzene are mixed, we see two layers.   This is a True statement.

Q: The following absorbance values for four solutions with known MnO4 concentrations were measured…

A: A spectrophotometer is a device that is used to measure the intensity of the light that passes…

Q: The scatter plot below shows the density of ethylene glycol solutions vs. the mass % of those…

A: Use the trendline equation to find out the mass percent of ethylene glycol in a solution for a given…

Q: 1a)Look at figure 18-3 from the reading (shown below). Which electronic transition in formaldehyde…

A: In UV spectroscopy there are different types of electronic transitions takes place such as  n to π*π…

Q: For the calculation of sd, shouldn't it be (0.97-1.09) and so on... because 0.97 = x and 1.09 =…

A: The general equation to find the standard deviation is: ∑i=2n(Xi-μ)2NwhereXi = Experimental valuesμ…

Q: The density of water varies with temperature.       T / oC            Density / g mL–1       19.00…

A: Linear interpolation is a method of curve fitting used to estimate the value of a function for an…

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A: A nanoparticle, also known as an ultrafine particle, is a matter particle with a diameter of 1 to…

Q: Based on the following data: Solution Volume of 1.0 M CH3COOH solution Experimental conductivity…

A: According to bartleby guidelines, I need to solve only first three subparts of the given question.…

Q: Part Il: Determination of Standard Solutions mL of 0.200 mL H20 added Tube # M Cuso, M CusO4-5 H20…

A: In the given question, the molarity of CuSO4 solution needs to be determined from the given data.

Q: Perform the following and give your answer with the proper number of sigifigs 0.02070 ÷ 4.50…

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Q: The diffusion constant for the amino acid glycine in water is 1.06 × 109 m²/s. In a 2.0-cm-long tube…

A: Given, Diffusion constant for amino acid and glycine in water , D =1.06 ×10-9m2s tube length , l =…

Q: Plot a calibration graph of absorbance vs concentration of Ca2+ and determine the concentration of…

A: From Beer's Law,                                A = ∈ × c × l  Where, A : Absorbance∈ : Molar…

Q: A student used 500mg of tabletop sweetener to make a total of 5ml of solution with biuret reagent.…

A: The student prepared a solution containing 500 mg of tabletop sweetener in a total volume of 5 mL.…

Q: how do you calculate per serving Zn value for kidney beans compare it with the reported value fine…

A: To calculate the per serving zinc (Zn) value for kidney beans and compare it with the reported…

Q: 4. A light pink, 0.050 M stock solution of cobalt (II) chloride (COCL) is analyzed by…

A: Since you have posted a question with multiple sub-parts, we will solve first three subpartsfor you.…

Q: The content of manganese (Mn) in steel was determined spectrophotometrically and with the use of the…

A: To find the concentration of Mn in the digested sample by the internal standard addition method…

Q: water sample from the cave was subjected to an analysis to determine ncentration. Using a…

A: We have given that  Solution concentration and their Absorbance We have given 5 standard so that by…

Q: Standard Solution 2 3 4 6. Conc. Of PO, 3- (ppm) 0.00 0.2 0.4 0.6 0.8 1.0 Absorbance 0.00 0.033…

A: A question based on Beer-Lambert law, which is to be accomplished.

Q: Absorbance Volume Concentration ug/mL (mL) of each standard 1 0.000 2 1 0.005 3 2.5 0.010 4 6.25…

A: The linear regression equation Y = 0.0036x + 0.0006

Q: The slope for the line is 71.22. Use the Beer's Law plot provided to determine the concentration for…

A: Use Beer's law for the calculation of the concentration of the solution.

Q: Estimate how much the salinity of the surface water of the Arctic Ocean would need to increase…

A: Density is defined as the mass of water per unit volume and has units of grams per cubic centimeter…

Q: The formula for 1000 g of polyethylene glycol ointment calls for 600 g polyethylene glycol 400. At $…

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Q: Caffeine 140 Benzoic acid y = 66,392x R>=0.9995 120 y= 23.633x R2 =0.9999 100 80 60 40 20 b.... . .…

A: The formula for the uncertainty in slope is shown below: Standard errorS.Dm­ = m1R2 - 1(n-2)1/2…