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- (b) Table Q1 below provides optical measurements of samples with known concentrations of analyte (ten samples were measured and the average and standard deviation are presented). They are also represented graphically in Figure Q1, below the table. Analyte concentration (nM) 0.1 0.2 0.5 1 2 5 10 15 fluorescence intensity 300000 250000 200000 150000 100000 50000 0 0 Table Q1 Fluorescence intensity (average) 9300 9200 10800 19600 37200 90000 178000 224000 5 [Analyte]/nM 10 Standard deviation 2000 1200 1000 2000 10000 30000 25000 40000 15 Figure Q1. Signal intensity for different analyte concentrations. Error bars are standard deviation. (ii) Calculate the limit of detection (LOD) for this sensor. (iii) A patient sample measured using this biosensor in the diagnostic laboratory generates a signal of 142800. The coefficient of variation of the device is 5%. Explain whether the diagnostic lab would have the confidence to report that the sample has a concentration in analyte of 8 nM or…Your pharmacy has on hand Tetracycline 250 mg/5 mL liquid.You receive a prescription for Tetracycline syrup 500 mg qid for 7 days. How many total milliliters would you dispense? Your pharmacy has on hand Prednisone 5 mg tablets.You receive a prescription for Prednisone 5 mg ii tabs stat and qid x 1 day, then ii tabs tid x 2 days, then ii tabs bid x 2 days, then i tab tid x 3 days, then i tab bid x 3days, then i tab qd x 4 days How many tablets would you dispense for this prescription? How many days will the patient take this medication for? Your pharmacy has on hand Dilantin 100mg capsules.You receive a prescription for Dilantin 100 mg 1 cap po in the AM & PM, 200mg (2 caps) po at noon, and 300mg (3 caps) po at hs. Dispense a 30 day supply. (using the 100mg capsules you have in stock) How many capsules will you dispense? Your pharmacy has on hand Dakins Irrigation Solution 1 liter.You receive a prescription for Dakins Irrigation Solution Irrigate chest tube with 100 mL…Which of the following scientists use this X-ray crystallography?
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- What are the mechanisms of samples separation work in Thin layer Chromatography? Please shortly write at your own words. Answer should be to the point (5-6 lines maximum).1. The following question tests your lab skills as well as basic knowledge understanding: (1). In Quant Lab, primary standard is defined as _______________________________________________________ . (2). In Quant Lab, secondary standard is defined as ______________________________________________________. (3). In your Lab9-Vinegar Titration, the perceived primary standard material is__________________________________. (4). In Lab9, the perceived secondary standard substance is _________________________________________________. (5). In your Lab9, the balanced titration reaction is _____________________________. It belongs to ___________ titration. At your titration equivalence(end) point, its pH equaled to ~ ___ (rough value). The pH indicator used in the NaOH solution standardization was _______________ while the pH indicator employed in the vinegar determination was _____________ ____________________ In your Lab9 report, you drew the derivative titration curve to help…Describe how you would prepare the following samples for analysis by a spectroscopic method. You should state the instrument you would use, and the calibration methods you would employ. -Arsenic in skin tissue-Paracetamol in solution from a tablet dissolution experiment-CYP450 enzyme activity in a blood plasma sample
- You purchase a premix flour containing iron (Fe), riboflavin, niacin, thiamin, and folate. For determination of Fe concentration in the flour sample, you conducted an atomic absorption spectrometer (AAS) experiment using known concentration of Fe (standard). About 10 g of flour sample is used and mixed in 100 mL of solution then measured using AAS. 1.2 0.8 0.6 0.4 0.2 8 10 12 -0.2 Fe concentration (mg/L) [a] If the absorbance value of the flour sample is at 0.35, calculate the Fe concentration presence in the flour sample (obtained equation from the standard curve is y = 0.1018x - 0.0514). [b] Commonly, the Fe contents are in the range of 1.6 mg to 2.3 mg in 100 g super flour to comply with FDA's standard of identity. Based on your calculation, justify if the Fe concentration in the flour sample comply with the FDA specification. Absorbance at 248.3 nmYour spectrophotometer maxes out at an absorbance reading of 2. If you get a reading of 2, what could you do to your sample to get an accurate reading.TEST ONE: When one uses Benedict’s reagent added to UNKNOWN samples taken and added (as a liquid) by a pipette (in our homes we call them eye-droppers) from each container into a labeled by number test tube. The seven labeled test tubes are then immersed into a beaker on a hot plate with warm water in it (called a water bath): Samples ONE TWO THREE FOUR FIVE SIX SEVEN All seven UNKNOWNS having Benedicts reagent added to them then change from transparent clear after to the same color as the Benedict’s reagent, when the blue colored reagent is added to them. They are all (all seven unknowns) now blue in color. Then the seven test tubes are immersed in a warm water bath. What is seen by you is that NO color change occurs initially when they are all immersed in warm water. THEN, over a five to ten-minute window of time as you watch the unknown test tube containing samples in the warm water bath, the test tubes containing unknowns ONE and FOUR change in color, to your eyes, to an…
