plate‚ a reference plate‚ we will spot five standard compounds . In addition‚ a standard reference mixture containing four of these same compounds will be spotted. In this experiment we will not be using Ibuprofen because it would overlap with salicylamide after the plate is developed.On the second plate (the sample plate)‚ you will spot Naproxen sodium as an additional standard and four commercial analgesic preparations in order to determine their composition. Two methods of visualization will
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Travels (cm) | Fluorescence? | I2 Staining Appearance | Acetaminophen | 48 | 150 | No | Dark Yellow | Aspirin | 86 | 150 | No | Not Significant | Caffeine | 14 | 150 | No | Not Significant | Ibuprofen | 92 | 148 | No | Not Significant | Salicylamide | 81 | 148 | Yes |
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compare unknown in TLC Silica Gel Plates- TLC plates. Stationary phase Elemental Iodine- used to accentuate the spots on the TLC plates so we can measure Rf. Asprin(Acetylsalicylic acid)- First compound used on TLC plate to compare the unknown. Salicylamide(o-hydroxybenzamide)-Second compound used on TLC plate to compare unknown. Caffine(1‚3‚7-Trimethylxanthine)-Third compound used on TLC plates to compare unknown. Acetone- Solvent A used in paper chromatography. Ethanol- Solvent B used in paper
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4cm = .392 Rf4 Ibuprofen 2.9cm/7.4cm = .392 Rf5 Salicylamide 5.0cm/7.4cm = .676 Rf6 Caffeine 1.0cm/7.4cm = .135 Trial 2: Rf1 Unknown 5.0cm/7.4cm = .676 Rf1 Unknown 5.0cm/7.4cm = .676 Rf2 Aspirin 5.2cm/7.4cm = .703 Rf3 Acetaminophen 3.3cm/7.4cm = .446 Rf4 Ibuprofen 4.9cm/7.4cm = .662 Rf5 Salicylamide 5.1cm/7.4cm = .689 Rf6 Caffeine 0.9cm/7
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Group 7 • This can be shown by halogen displacement reactions where elements higher up the group will displace elements further down the group • This can be done with chlorine dissolved in water or by bubbling chlorine gas through NaBr(aq) or NaI(aq) Cl2 + 2NaBr ( 2NaCl + Br2 Pale green solution Yellow solution/orange in hexane Cl2 + 2NaI ( 2NaCl + I2 Pale green solution Brown solution/purple in hexane Br2 + 2NaI ( 2NaBr +
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11.Put 5 drops of 0.2 M NaI into each of the wells in Row D. 12.Reserve rows E and F for unknown solutions. 13.Add 5 drops of 0.5 M Ca(NO3)2 solution to each of the four halide solutions in Column 1. Record your observations in a data table. 14.Add 2 drops of 0.1 M AgNO3 solution
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percent of the population was affected with IDD‚ according to the goiter prevalence survey done by Food and Nutrition Research Institute (FNRI).Selected ReferencesDepartment of Health. Guidelines for Salt Iodination for IDD Elimination Training Modules‚ 1994. Mannar‚ V. Salt Iodination-Part 2: Iodination Techniques. IDD Newsletter‚ 1988. Suwanik‚ R.‚ et al. Simple Technology Provides Effective IDD Control at the Village Level. IDD Newsletter‚ 1989. | Mechanical Chalkdust Dispenser | AbstractThe
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Abusive head trauma (AHT) is the most common finding of NAI leading to death in children under 1 year old (22). Even a low suspicion of AHT should require appropriate follow-up imaging given the morbidity and mortality traumatic intracranial injury (22). Injuries includes collision with a stationary object‚ direct impact to the head‚ and alternating acceleration and deceleration (22). Infants are particularly at risk for traumatic brain injury as a result of being shaken due to the relative weight
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Objective The purpose of this experiment is to identify an unknown proprietary drug using thin-layer chromatography. The unknown’s behavior in thin-layer chromatography will be compared with that of its possible component analgesics. The possible unknowns and their analgesic ingredients will be Anacin (aspirin‚ caffeine)‚ Excedrin (acetaminophen‚ caffeine‚ aspirin)‚ Motrin (ibuprofen)‚ and Tylenol (acetaminophen). Introduction Thin-layer Chromatography(TLC) was the method used to figure out and
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best answer. A spiral femoral shaft fracture in a non-ambulatory child is considered non-accidental injury (NAI)‚ or physical abuse‚ until proven otherwise. The fracture occurs through a torsional force (twisting) applied to the leg. Skeletal survey is necessary to look for other (acute and old) fractures. Other fracture patterns that are often
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