analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU) caffeine 1 1 4.67 302.85 aspartame 5 1 7.53 15.83 benzoic acid 1 1 8.14 89.98 saccharin 1 1 1.91 84.86 mixture(add everything above with 1:1:1:1 ratio) 1 4.47 69.58 How to get the concentration of the mixture in this case?
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| analyte | concentration(C)(mg/ml) | injection volume (ul) | elution time (time) | peak DAD signal(mAU) |
| caffeine | 1 | 1 | 4.67 | 302.85 |
| aspartame | 5 | 1 | 7.53 | 15.83 |
| benzoic acid | 1 | 1 | 8.14 | 89.98 |
| saccharin | 1 | 1 | 1.91 | 84.86 |
| mixture(add everything above with 1:1:1:1 ratio) | 1 | 4.47 | 69.58 |
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- avg concentration: 8.937x10^-7You finish doing an experiemnt with Benzoin. These are the results you get:Boiling start point: 137 ceciusBoiling end point: 130 ceciusVile while empty (with cap on): 15.348Vile with crude prod (with cap on: 15.748 Your starting weight: 1.00115.748 - 15.348 = 0.400 / 1.001 = 0.3996 or 39.96% YieldAnswer the following questions with this information:Initial Mass of impure sample:Mass of recrystallized benzoin:Percent reccovery of Benzoin:Melting pot range of purified benzoin:Literature melting point for benzoin:Solution Concentration of FeSCN2+ (M) Absorbance1 0.0000491 0.3112 0.0000818 0.5763 0.000115 0.7554 0.000152 0.9075 0.000196 1.185 Solution Concentration of FeSCN2+ (M) Absorbance 1 0.0000491 0.311 2 0.0000818 0.576 3 0.000115 0.755 4 0.000152 0.907 5 0.000196 1.185 A series of aqueous solutions of FeSCN2+ of different concentrations were prepared, and the absorbance of each was measured at a wavelength of 455 nm. Use Excel or Google Sheets to prepare a useful graph of the data (given below) that could be used to determine the concentration of an unknown solution from its absorbance. Ensure your graph is properly formatted and labeled. Click the…
- 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 asap6 I- + BrO3- + 6 H+ ----- 3 I2 + Br- + 3 H2O Rate= k[I-]m[BrO3-]n[H+]p rate= (∆[I2])/(3*∆time) [I-] 0.010M [S2O3-2] 0.0010M H2O [BrO3-] 0.04M HCl 0.10M Starch Indicator (sec.) Volume, ml Volume, ml Volume, ml Volume, ml Volume, ml 1 10 10 20 10 10 1-3 drops 301.90 2 20 10 10 10 10 1-3 drops 213.28 3 10 10 10 20 10 1-3 drops 214.92 4 10 10 10 10 20 1-3 drops 86.45 Temperature of Reaction: _______20 C________ 1. Using the dilution equation (M1V1 = M2V2) calculate the concentration of the I-, BrO3- and the H+ (HCl) in the final mixture just prior to any reaction. 2. Calculate the rate for each experiment as explained in the background information. 3. Using the information above determine the rate law (m, n and p) for the reaction. Show all calculations/reasoning in your notebook. m_____________ n_________________ p…MaVa=MbVb
- Felodipine calcium channel blocker standard (0.251mg/ml) and felodipine sample (0.245mg/ml) solutions were prepared and injected to the HPLC. The peak area of felodipine standard is 275428 and the sample is 272982. The potency (purity) of felodipine standard is 98.9%. What is the assay percentage of felodipine? a. 102.23 b. 98.71 c. 101.07 d. 100.42How much calcium would you ingest by drinking one 8 oz glass of your tap water? Show all calculations. Tap Water Trial 1 Tap Water Trial 2 Tap Water Trial 3 Initial Syringe Reading 1.0ml 1.0ml 1.0ml Final Syringe Reading 0.65ml 0.68ml 0.67ml Volume of EDTA Consumed 0.35ml 0.32ml 0.33ml Water Hardness ppm CaCO3 70.07 ppmCaCO3 64.064 ppmCaCO3 66.066 ppmCaCO3 Average ppm 66.73 ppmCaCO32.Dscribe The History of Forensic Chemistry? 3.Enumerate and discuss the functions of forensic Chemist. 4.Discussed the Purposed of the Golden rules in the practice of Forensic Chrmistry. 5.What is Toxicology. 6.Discussed the History of Toxicology. 7.Discussed Tbr collection of Sample for toxicology. 8.Discussed The importance of toxicology. 9.Discussed the Types of poison. 10. Discussed the entrance and elimination of poisons in Human body....
- 0.4ml to minimsThe average concentration of cadmium (Cd) in tea leaves sample is 68.0(±1.5) ppm Cd. If the true concentration of Cd is 70.0 ppm Cd, then the relative % bias is: -1.86 % +1.86 % -2.86 % +2.86 %q41 IF YOU DO NOT KNOW THE ANSWER PLEASE DO NOT REJECT IT please calculate the unknown concentration of the protein D wih an absorbance value of A412 given the standard curve indicated in the table. write your answers in numbers only with 2 decimals. protein concentration (ug/ml) absorbance 0 0.000 0.02 0.161 0.04 0.284 0.06 0.438 0.08 0.572 0.10 0.762