Potassium bromide

Levofloxacin was kindly provided by Dr. Reddy’s laboratories (Hyderabad, India). Stearic acid and sodium saccharin were purchased from Sigma Aldrich (Mumbai, India). All other materials are of analytical grade. Freshly collected and filtered double distilled water was used throughout the study. Preparation of Levofloxacin Cocrystals. Levofloxacin cocrystals were prepared by the solvent evaporation method. Varying ratios of levofloxacin and coformers such as stearic acid (1:1, 1:3, 1:5 and 1:7) and

Experimental Section: Chemistry: Melting points were obtained with an Electro thermal digital melting point apparatus (model 9100) and are uncorrected. IR spectra (KBr) were measured on Perkin-Elemer FT/IR spectrophotometer, 1H-NMR spectra were recorded on JEOL (500 MHz) at Faculty of Science, Alexandria University in DMSO-d6 as solvent, using tetramethyl silane (TMS) as internal reference. Elemental analysis (C, H, and N) and Mass spectra were performed at the Micro analytical Unit of Cairo University

Experiment 1 Prelab : Compound Molecular Weight (g/mol) Melting / Boiling Point (°C) Density (g/〖cm〗^3) Characteristics Sodium Bromide, NaBr 103 747 / 1390 3.2 White crystal, cause skin and eye irritation Bromine, 〖Br〗_2 160 -7.2 / 58.8 3.1 Red liquid, corrosive Chemical properties of binary compounds of group 1 : Halides Hydrides Oxides Diagonal relationship Purpose : Part I Part II – To diagnose diagonal relationship. Step-wise procedure : Part I Prepare 40mL of concentrated 〖Na〗_2 〖CO〗_3⦁〖10H〗_2

Abstract In this experiment, the nature of linkage isomers will be observed on the example of nitritopentaamminecobalt(III) Chloride and nitropentaamminecobalt(III) Chloride. Their relative stability will be compared on standard conditions and the infrared spectroscopy of both the isomers will be obtained to analyze the characteristic absorption bands for the nitro and nitrito group. Yield for nitritopentamminecobalt(III) Chloride was obtained to be = 1.9221 g(73.24 %) and yield for nitropentamminecobalt(III)

For this assignment I decided to head out to Docweiler Beach near LAX. I love the beach, not so much for going swimming or getting wet but more to lay in the sand and just relax to the soothing sound of the waves, especially nice in this hot weather. I decided to bring my sister for the ride so it’s not to lonely and set up around a more deserted part for more concentration and relaxation. I also chose Dockweiler Beach because there I could get a sense of all the 5 ancient elements all in one sitting

volts of electricity, meaning the compound contained both positively and negatively charged ions that move around to conduct the electricity. Potassium Sulfate has a solubility of 1 g in 8.3 mL of water, which matches with the results of the unknown being soluble in water (The Merck Index). Ionic compounds, a form of polar compounds, are soluble in

The day started quietly. All of my classmates listened to the teacher drone on about separating DNA with agarose gel electrophoresis. But the calm vanished when some kid we've never met crashed through the door of the lecture hall looking haggard and exasperated. “Don’t It’s...dangerous...COMING!” At that, the boy sunk to his knees, clutching his head and moaning. Right before he hit the ground though, his eyes caught mine and I could tell that this wasn’t some freaky joke meant to scare the

Abstract: The experiment was done to demonstrate the effect of ADH on the volume and concentration of urine in order to demonstrate the control of ADH over blood plasma osmolarity. Since non-invasive methods were preferred the volume and concentration of urine was used in place of drawing blood. The results that we our anticipating are that ADH levels in the group of subjects that ingested the 6 gm. Of NaCl would increase over time in response to the increased osmolarity of the blood from all

Part A: Diffusion on a liquid in a liquid. I did an experiment with three different glasses of tap water from the faucet. All three cups measured the same which happened to be 13 cm from the top of the cup to the bottom of the cup. I let the water settle, and sit for about an hour so the temperature was the same for all three cups. I then placed one drop of food coloring into the first glass and waited for the coloring to reach the bottom. I calculated 93 seconds. I then went to the second glass

An investigation into the effects of varying seawater concentrations on two marine invertebrates’ osmoregulatory abilities; Carcinus maenas and Arenicola marina. Introduction The concentration of solutes in the bodily fluids of most marine invertebrates is roughly isosmotic to their environment (Raven, 2008). Because there is no osmotic gradient there is no tendency for the net diffusion of water away from the animal’s cells to occur. When a change in salinity occurs some organisms have the ability