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- Please determine how to make a working standard Solution of about 0.010mg/mL. Caffeine will be the active. Diluent will be water.What weight of the soda ash (impure Na2CO3) should be taken for analysis in order that the number of milliliters of 0.500 N acid used will be equal to one-half of the percentage of Na2CO3 in the sample? Note: Please include the complete solution. Thanks!How much of this stock would I need to make 15.5ml of treatment solution which is (3ppb ATZ, cell culture media). What tools would be best to measure both the ATZ stock of (9ppm atz, dmso) and the cell culture media?
- Show complete handwritten solution For faradday constany use 96485Compute for the needed values for slution preparation: 1. Prepare the following solution quantitatively using boiled distilled water per group:250.0 mL 0.0500 M standard HCl solution from 1.0 M HCl 2. a. 500.0 mL 0.1000 M stock EDTA solutionb. 100.0 mL 0.0500 M stock Ca2+ solutionA measurment for the Lambda-max for a colored solution is 671 nm with a very high Absorptivity. What does the color of the solution look like in the sunshine? and What does the color look like in a room where the only light source emits 671 nm
- A mixture of pure BaCO3 and pure Na2CO3 weighs 1.000 g and has the total neutralizing power of 15.37 meq of CaCO3. Calculate the percentage of combined CO2 in the mixture and the weight of Li2CO3 that has the same neutralizing power as 1.000 g of the above mixture. Instructions: Include up to 4 decimal places See sample photo for the format of solutionA pain reliever is soluble in cold water to the extent of 1.0g/1310 mL and soluble in diethylether to the extent of 1.0/90 mL. What is the approximate distribution coefficient?Calculate the percent error in Avogadro's number calculated by using the following experimental data. Pipette calibrated as 30 drops/mlDiameter of the watch glas:15.5 cmNumber of drops to complete monolayer:23Concentration of stearic acid solution: 1.2x 10^-4g/ml.
- Which statement is true? Statement 1: The two phases in the liquid/liquid extraction are aqueous layer and organic layerStatement 2: The distribution coefficient is the ratio of the equilibrium concentrations of the analyte in the two immiscible liquidsDissolved 0.273 grams of pure sodium oxalate (Na2C204) in distilled water and added sulfuric acid and titration the solution at 70 °C by using 42.68 ml of KMNO4 solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (H2 C204) with 0.1024 N. Calculate the normlity of KMNO4. Note that the molecular weight of sodium oxalate (Na2C204) = 134 and its equivalent weight = 67 * %3DThe distribution coefficient for X between chloroform and water is 9.6. What volume of CHCl3 is required to decrease the concentration of X to 1.0 × 10-4 if 25.0 ml of 0.0500 M X is extracted witha) 25.0 ml portions of CHCl3b) 10.0 ml portions of CHCl3c) 2.0 ml portions of CHCl3