The most common test used for the measurement of hormones is: A) immunoassay B) colorimetric spectrophotometry C) high performance liquid chromatography D) ion selective electrode
Q: Draw the organic product for this reaction. ОН H3C -CI ОН ?
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Q: Draw the organic product for this reaction. ОН H3C- -CI ОН ?
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Q: НО CI
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A: moles of H2 = 0.300 molmoles of I2 = 0.300 molVolume = 1.00 LKc = 53.3
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- Gas chromatography questions:What is the application of chromatography (HPLC) and it's mechanism ?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. 100.42
- paper chromatography?Determination of ascorbic acid in vitamin C tablets: which analytical approach is better; volumetric or spectrophotometric analysis?An unknown containing 93.2 mg of analyte per liter was spiked with an additional 80.0 mg/L. Analysis of the spiked sample gave a concentration of 179.4 mg/L. Find the percent recovery of the spike.
