gradient exists in a solution when the concentration of solutes in the solution is Da less than the amount of solvent. Ob. greater than the amount of solvent. Oc. the same everywhere. Od. not the same everywhere.
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- Solution Absorbance mg/ml aspirin Standard solution - 1.6 mg/mL A 0.638 0.08 mg/mL B 0.504 0.064 mg/mL C 0.376 0.048 mg/mL D 0.259 0.032 mg/mL E 0.126 0.016 mg/mL A = -log T where T = %T ÷ 100 Construct a callibration curve using the above data. Absorbance should be on the vertical axis and "mg/mL of acetylsalicylic acid" on the horizontal axis. The line should go through the origin. Using the data provided, the graph you have generated, and the procedure that was used to generate the solutions which were examined by spectroscopy, calculate the amount of acetylsalicylic acid per tablet. Commercial tablet 1 labelled as 100 mg enteric coated Absorbance = 0.16 Commercial tablet 2 labelled as 300 mg Absorbance = 0.45 Student prepared tablet from practical 5 Absorbance = 0.19 Using the data provided, the graph you have generated, and the procedure that was used…Table of caffeine standards concentration Sample Conc, ppm Std1 16 Std2 32 Std3 48 Std4 64 Std5 80 If the volume used to make 100 mL of std 1 is 2 uL what is the concentration in M used to make a standard calibration curve? The standards are going to be used to build calibration curve to analyze caffeine in an energy drink. If 500 mL of the energy drink has target of 400 mg caffeine, how will you prepare the sample if you need 10 mL for the analysis ? . Caffeine MM=194.19 g/mol.The pH probe/meter uses following equations: Ecell = L + 0.0592 log a1 = L - 0.0592 pH Where L = L1 + EAg/AgCI + Easy= constants L1 = - 0.0592 log a2 a1 = activity of analyte solution a2 = activity of internal solution How will measured pH value be affected vs “real” pH if the temperature of the sample is 30C when pH was measured ? a.measured pH is lower than real pH b.impact can not be determined c.measured pH is higher than real pH d.measured pH is same as real pH
- Unknown Testing: Which compound(s) were present in the unknown sample? (sugar? starch? protein?a MD order 15 millimoles of potassium phosphate (MW 136). How any milligrams are need for this does. **Do not round your answer**Sucrose + H2O(negative control): Colorless to brown solution: Blue solution Conclusion for Iodine test A. amylose present B. amylose not present Conclusion for Benedict's test A. reducing sugars not present B. reducing sugars present Sucrose + HCl(potential hydrolysis): unchanged compared to sucrose+water: Conclusion for Iodine test A. more amylose present B. LESS amylose present C. NO change Conclusion for Benedict's test a. more reducing sugar present b. less reducing sugar present c. no change Did hydrolysis of sucrose occur in the presence of acid? A. Yes B. no
- The dilution factor for Sample 1 if 20 µL of extract is added to 980 µL distilled water is 50. What would the dilution factor for Sample 1 be if 500 µL of the diluted sample from last sentence were diluted with 500 µL distilled water?I need the full answer... At 10 am you received a doctors order that you have to Infuse 1,000ml of PNSS in 10 hours to Mr Dela Cruz. What is the correct rate of this isotonic solution when the drop factor is 10 gtt = 1ml ? 15.73 qtts/min 31.249 qtts/min 49 qtts/min 18 qtts/min1. pH cannot affect the enzyme - activity A. True B. False 2. It took 6 mins for the disappearance of blue-black color in test tube 4 with 60 degrees Celsius temperature. A. True B. False
- True or False. If drug A produces a larger zone of inhibition than drug B on the Kirby-Bauer disk diffusion test, drug A should always be prescribed. Explain your answer.2- How much solution (in ml) of silver nitrate at a molar concentration of 0,0540 mol/l is needed as to receive 200 ml of the solution with desired titrimetric conversion factor of silver nitrate (М=169,863 g/mol) corresponding sodium chloride (М=58,443 g/mol) to be equal to 1,810 ∙10-3 g/ml? Express numerical result with an accuracy of: Х,ХTONICITY The salinity (concentratin of NaCl) if human blood is 0.9%. Imagine an evil nurse injected a 15% saline solution into a poor patient. What do you predict will happen to the patient's red blood cells? Answer in the textbox provided below.