Sodium sulfate

The Calorimetric Determination of Enthalpy and Entropy Changes of the Thermal Decomposition of Sodium Sulphate Decahydrate Abstract Sodium sulphate decahydrate thermally decomposes to anhydrous sodium sulphate at 50⁰ C and cools to form anhydrous sodium sulphate. Using Hess's Law the enthalpy and entropy changes of this process can be determined in order to deduce the spontaneity of the reaction. The transition temperature was determined by melting the hydrated crystals at 50⁰ C and allowing them to cool until a constant temperature was reached. The molar enthalpy and molar entropy changes were determined using calorimetric principles. Different weights of both decahydrate and anhydrous crystals were added to water and the temperature changes…

it, so you must vent the funnel occasionally to prevent the stopper from popping out, causing a mess and possibly getting dichloromethane on your skin. ~During the pre-phase of this experiment it is recommended that you prepare all aspects of this experiment ensuring any safety reliability’s. It is recommended that you have chosen a clean safe environment to perform this experiment. All actions taken place during this experiment are under your care and will reflect the outcome of this…

In this experiment Sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) was performed under reducing conditions to estimate the molecular weight of proteins within a sample. The protein sample was from the previous using anionic exchange chromatography to partially purify N-acetyl--D-hexosaminidase, Lab 3. The molecular weight was determined through the interpolation of a standard curve of proteins with a known molecular weight. The molecular weight of band 1 was determined to…

This is a test to see if SO4 is present in the solution. If the mixture has a white precipitate of Barium Sulfate, then the solution has a sulphate ion present (4). Taking one of the remaining test tubes, add 0.1 mL of BaCl2 into the solution and mix well. HCl Test Fig 5. If HCl is present in the solution, bubbling and a strong smell of ammonium should be present. Using the remaining test tube, add 0.1 ml of HCl into the solution. Record your findings. Record Conductivity using…

The study consisted of five treatment groups, these groups were divided out as follows. Glucosamine solo, chondroitin sulfate solo, a mixture of glucosamine and chondroitin sulfate, celecoxib which is an anti-inflammatory drug, and an inactive substance that looks like the study substance which in medical terms is known as a placebo. Glucosamine and chondroitin sulfate and the sequence of the two were correlated with the placebo to assess whether any of these control groups improved joint pain.…

different chemicals that were used in this experiment were Pilocarpine, Atropine Sulfate, Epinephrine, Digitals, Potassium, Sodium, and calcium ion concertation. Pilocarpine stimulates the effect of parasympathetic nerve stimulation by enhancing acetylcholine release. Atropine Sulfate is a drug that blocks the effect of the neurotransmitter acetylcholine which is liberated by the parasympathetic nerve endings. Cardiac muscle and skeletal muscle are both different in functionally and in fine…

Biochemical tests are used to detect the presence of different kinds of organic molecules, carbohydrates, lipids, nucleic acids, and proteins. These tests include the Benedict’s Test, Iodine Test, Sudan III Stain Test, Biuret Test and many others. With these tests, the nutrients from an unknown solutions can be identified in the solution. The Benedict’s test is used for identifying reducing sugars, which are simple sugars that include monosaccharides and some disaccharides. The Benedict’s…

The first mixture of sodium chloride and water is homogenous the salt equally spreads out when added to the water. After adding sand, the second mixture becomes heterogeneous, the sand sinks to the bottom of the beaker and does not mix among the salt and water. b. The mixture requires the following materials: 20 mL sand, 100 mL water, 1 gram salt, a glass stirring rod, and a 250 mL beaker. Separating this same mixture requires the following materials: the mixture from the previous step, 2 250 mL…

Avance (400 MHz for 1H, and 100 MHz for 13C), Institute of Organic Chemistry, Karlsruhe University, Karlsruhe, Germany with deuterated DMSO-d6 as a solvent Chemical shifts are quoted in δ and are referenced to TMS. Mass spectrometry was performed by electron impact at 70 eV, (FAB-MS): Finnigan MAT 95, Institute of Organic Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany. The reactions and purity were monitored by TLC, on aluminum plates coated with silica gel with fluorescent…

Mi’Chaela Windsor was born October 29, 2013 as a 34-week premature baby and with a lip and tongue tie. She is the youngest sister out of the two, Serena Windsor who is 18 years old and Lekeiya Windsor who is 21 years old. Mi’Chaela has a mom and dad who is still married for 18 years, Diann Windsor and Michael Windsor. The Diann and Michael are both in their forties. Diann is a stay at home mom who recently received her Masters in Human Resource. Diann also home school Mi’Chaela due to the fact…