Lab 02

Part A: Standardization of Potassium Permanganate, KMnO4 Solution Your Data Group I Group II Group III Mass of Na2C2O4 used 0.23 9 0.30 g 0.22g 0249 Initial buret reading Om L 3 mL 0 mL 0 mL Final buret reading 36.6 mL 28 mL 31.3mL 51.1mL Volume of KMnO4 used 36.6 mL 50 mL 31.3 mL 51.1mL 25+25

Assay 5 KB) Page of 2 - ZOOM + 3. If a researcher starts with 3.00 mL of a 4.50 mg/mL protein solution and adds 10.0 mL of water, what is the amount (mg) of protein in the diluted solution? Next Previous awe

i need help calculating slope and inverse slope pleas

To enter exponential values, use the format 1.0e-5. Solution 1.10 M Acetic acid (mL) 0.900 M Sodium acetate (mL) [H30*] (M) 1 8.00 2.00 2 7.00 3.00 3 6.00 4.00 4 5.00 5.00 4.00 6.00 6. 3.00 7.00 7 2.00 8.00 8 1.00 9.00 LO

Sheet 5 From the following data determine the following: Define outlier and then identify the outlier in the data. Determine if the outlier should be kept of discarded from the data. Trial 1 2 3 4 HCl (mL) 22.3 28.4 29.8 29.3 NaOH (mL) 35.2 35.1 34.9 35.0

Three labs were contracted to measure the concentration of a 5.50 ppm Ca2* standard solution. They each measured the solution 3 times, and their results are as follows: Measurement 1 Measurement 2 Measurement 3 Laboratory 1 5.47 ppm 5.54 ppm 5.50 ppm Laboratory 2 5.32 ppm 5.44 ppm 5.56 ppm Laboratory 3 5.61 ppm 5.62 ppm 5.60 ppm Select ALL of the TRUE statements about the measurement capabilities of these labs. Lab #3 was the most precise. Lab #1 was the most precise. Lab #1 was the most accurate. Lab #2 was the most precise. O.Lab #2 was the most accurate. Lab #3 was the most accurate.

Concentration of TZ stock solution (μMμM) 42.06

Table of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…

Table 1: The result for test tube 1 to 8 using of BSA stock solution. Tube BSA Cone H;O (ml) BSA (ml) Biuret ABS mg/ml reagent (ml) 1. 1.0 4. 0. 2. 0.9 0.1 4. 0.003 3. 2. 0.8 0.2 4. 0.012 4. 3. 0.7 0.3 4. 0.021 5. 4. 0.6 0.4 4. 0.028 6. 0.5 0.5 4. 0.039 7. 6. 0.4 4. 0.042 8. 7. 0.3 0.7 4. 0.052 Table 2: The result for test tube 9 to 12 using of Unknown solution Protein Tube Uknown (ml) H;0 (ml) Biuret reagent ABS concentration (mg/ml) (ml) 9. 4. 0.036 10. 4. 0.035 11. 0.5 0.5 4. 0.017 12. 0.5 0.5 4 0.016 In order to determine the actual concentration of protein in the unknown samples it is necessary to draw the standard curve (concentration on the x-axis and on the absorbance y- axis) and interpolate the absorbance values of the unknowns. Draw graph and find protein concentration(mg/ml)

please help me find concentration   Concentration of TZ stock solution (μMμM) 42.06

Question 28

Chemistry Please provide a detailed solution for the following question You have constructed a standard curve from BSA protein for a Bradford Assay. The curve has 0, 1, 2, 3, and 4 ug protein in 50 µl water. You have an unknown protein with a concentration somewhere between 1-5 mg/mL. What serial dilution series should you use to guarantee at least two dilutions of your unknown fall below 3 µg (linear portion) on the standard curve? For example, would 1/2 x 1/2 x 1/2 (3 2-fold dilutions) be sufficiently dilute that two of the dilutions would give values within the linear portion of the standard curve?

MX (Ksp = 2.42x10-11) Express your answer in moles per liter. S = Submit Part B S = IVE ΑΣΦ PbCl2 (Ksp = 1.17x10-5) Express your answer in moles per liter. Part C Request Answer Submit Request Answer S = 15| ΑΣΦ Ca(OH)2 (Ksp = 4.68x10-6) Express your answer in moles per liter. IVE ΑΣΦ Submit Request Answer www wwwww ? ? ? M M M

A student was given a stock ascorbic acid solution of 2.323 mg/L. Following the directions in the lab, the student obtained the data below. Calculate the concentration of ascorbic acid in the Standard (in microgram/L, ug -). Report your answer with one place after the decimal. initial final initial volume final volume volume volume color reagent color reagent stock stock solution solution solution solution Standard 1.35 mL 6.64 mL 5.12 mL 9.32 mL

Question 5 In Step 8 (see below, as well as in the presentation), three different slimes were prepared by adding different amounts of borax solution. Which of the following statements is/are correct? Step 8: Prepare the following slimes and evaluate their properties Sample 1 3 PVA solution 40 mL 40 mL 40 mL Borax solution 10 mL 5 mL 1 mL Deionized water O mL 5 mL 9 mL Breaking length Bounce height 30cm 70cm NA 5cm 10cm NA O The more borax we add, the more rigid the slime will become. O The less borax we add, the less elastic the slime will become. O The change in its properties is due to the added amount of water which will affect the structure of the slime. O The water is added in order to have the same final volume of reactants.

2). 50.00 mL + 0.030 mL = 50.030 mL 50.00 mL - 0.030 mL =49.970 mL 3). 40.00 mL + 0.8 mL = 40.80 mL 40.00 mL - 0.8 mL = 39.20 mL

Table #2 Worktable for BCA Assay Standard Water (μl) Tube # 1 2 3 4 5 6 7 8 9 0 125 325 175 325 325 325 400 400 BSA source (μl) 300 stock 375 stock 325 stock 175 of tube #2 325 of tube #3 325 of tube #5 325 of tube #6 100 of tube #7 0 Protein (ug) Add the volumes listed in Table 2 to each tube. Add the water first and then the appropriate standard. Pipette each of the protein samples directly into the water, do not dribble on the side of the test tubes. The standard is at a concentration of 2 mg/ml and contains bovine serum albumin (BSA). Calculate the amount of BSA protein added to each of the tubes and write this in Table 2 (Protein (ug)).

Determine the concentration of linalool in a highly valued lavender essential oil. The peak areas of a series of standard solutions (calibrations standards) acquired from GC-MS (gas chromatography-mass spectrometry) is presented below.               Concentration (mg/L)                             Peak area 0 201 25 5214 50 14658 75 23647 100 32657 125 42652 150 52478 QUESTION: Calculate the concentration of linalool in yourhighly valued lavender essential oil which returns a peak area of 27235.