Following the Kjeldahl procedure, calculate the % protein content of a flour sample by considering the following: Vol HCL (0.1 N) for blank = 0.2 mL Vol HCl for sample = 16 mL Wt of sample = 1.0872 g N conversion factor = 5.7 ...i will surely upvote...please answer asap
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- . 100 ml boiled cooled and filtered water sample takes 9.6 ml of M/50 EDTA in titration. The Permanent hardness of the water sample in terms of ppm of CaCO3 equivalent isSheet 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 35.0Table 1: Volumes in of iodine in mL used to titrate mixtures of 10 mL of reaction mix and 10 mL of urine. student trial 1 trial 2 trial 3 total volume (mL) a 12.6 11.8 12.5 300 290 b. 10.6 10.7 10.6 11.1 118 12. 10.9 405 13.0 12.5 349 mg vit. C mL iodine TV (mL/hour) 10 mL urine aliquot TVC (mg/hour) =7 (mL) · CF !! What is the hourly vitamin C excretion rate (mg/h) of student b if the CF is 1.06? (include no more than two decimals in your answer, e.g.: 123.45, and do not type the units) 10.6 need ASAP
- From a 10-mL sample, a 1-mL aliquot was taken and diluted to 100mL. From this, a 5-mL aliquot was taken and diluted to 20mL.The final 20mL was found to have a concentration of 0.004M analyte X.What is the concentration of analyte X in the 10-mL sample?Ooldtion Table 1. Measurements for standardization of NaOH Trial 1 Trial 2 Trial 3 1] Tared mass of KHC3H4O4 (9) 0.374 0.325 0.357 12] Burette reading of NaOH, initial (mL) 4.59 3.61 4.03 [3] Burette reading of NaOH, final (mL) 22.03 18.77 21.17 Part B. Molar Concentration of an Acid Solution Enter the number corresponding to the type of acid you have 1. HA 3 2. H2A 3. H3A Enter the unknown number. 21 Table 2. Measurements for titration of unknown acid Trial 1 Trial 2 Trial 3 [1] Volume of acid (mL) 25.0 25.0 25.0 [2] Burette reading of NaOH, initial (mL) 2.13 2.48 3.68 [3] Burette reading of NaOH, final (mL) 24.10 24.52 25.56 Part C. Percentage by Mass of an Unknown Solid Enter the number corresponding to the type of acid you have 1. HA 3 2. H2A 3. H3A Enter the unknown number. 30 Molar mass of the unknown acid 192.14 Table 3. Measurements for titriation of solid Trial 1 Trial 2 Trial 3 [1] Mass of sample (g) 26.334 29.157 27.111 [2] Burette reading of NaOH, initial (mL) 3.21 1.48…Extraction Pre-Lab Question 14 Status: Not yet answered | Points possible: 1.00 Type answer: Suppose you are working with a NaOH stock solution but you need a solution with a lower concentration for your experiment. Calculate the volume (in mL) of the 1.410 M stock NaOH solution needed to prepare 250.0 mL of 0.1273 M dilute NaOH solution. here to search 2 F12 P Cla Hon
- A student measures the following using a crude colorimeter. Intensity of blank =206 Intensity of solution = 168 What abosorbance value would the student report for the sample?25 ml of pickled brine was taken from an apple pickled with vinegar and diluted to 500 ml, 25 ml of this was taken and acidity was determined with 0.2 N (Factor: 1.05) NaOH. In the main trials, 6.3 ml - 6.5 ml - 6.9 ml, respectively, 0.1 ml base was used in the analysis without using the sample.For example, how many ppm is its acidity?Sources of Error Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided TOPIC: Determination of % SO32-Not all solid was transferred during the filtration of the precipitate. EX _____ ET
- ▪ In a blood alcohol analysis by GC-FID, methanol elutes at 1 min, ethanol at 2 min, IPA at 3 min, and IS at 4 min. In the patient sample, the analyte elutes t 2 min and the IS at 8 min. What is the relative retention time and the analyte in the patient? A) methanol B) Ethanol chu C) IPAmmol) of iodine in 20 mL of Experimental: Dissolve an accurately weighed sample of 100 mg ( water containing excess Kl (~1 g,_____mmol) in a 25mL beaker. The solution should be a deep brown in color. mmol of 0.250 g) Accurately weigh 250-300 mg of sodium thiosulfate pentahydrate (calculate into a 25-mL volumetric flask. Fill the flask to the mark with water.1. Data & Results 4.0 mglmL Concentration of stock solution (include units): Table 1-Beer's Law Plot Data V Volume of standard solution dispensed (mL) M, Diluted concentration (include units) Sample Absorbance A 2.00 mL 0.084 4.00 mL 0.173 l6.00 mL 0.259 8.00 mL 0.340 E 10.00 mL 0.418 Equation of trendline from Beer's Law plot: whats the diluted concentration and equation of trendline from the beers law plot once created?