Solid

Freezing Pt Depression Lab Purpose- To predict compare the actual and theoretical van’t Hoff Factors for three compounds via freezing point depression Day 1 Procedure Fill a beaker ¾ full with ice from the freezer and add ¼ to ½ inch of table salt. Stir until mixed and check that the temperature is ~≤ -8 ºC. Fill a test tube ½ full with tap water Put the temp probe in the test tube and immerse the test tube in the ice-salt bath. Stir the water in the test tube gently with a thermometer while

Milestone 12: Case Study—Eclipse Yujia Xie I. Introduction Eclipse is an open source Integrated Development Environment (IDE) for almost every computer programming language over a dozen platforms (Mac, Linux, Windows, etc.). In fact, it is one of the most popular IDEs nowadays for multiple programming languages, especially Java. Back in 2001, Eclipse 1.0 came out as a framework, a flexible architecture that served as the building tool for developers, providing a variety of accessible toolkits, private

used because it is an important method to purify solids and remove any impurities that might have appeared when pouring chemicals or not cleaning the glassware correctly. Recrystallization was carried out in this experiment after extractions to achieve an even higher state of purity. Extraction is used to remove one or more component of a solid, liquid, or gas mixture into a separate phase. In this experiment, extraction was used to separate a solid-liquid

The melting point of a chemical is a physical property inherent to that substance. The chemical changes from a solid to a liquid state, but the composition remains the same. It can be used to determine the identity of an unknown substance. The purpose of this experiment was to discover the identity of an unknown chemical by determining its melting point. The unknown substance was determined to be trans-cinnamic acid. When the unknown and trans-cinnamic acid were mixed, the mixture melted in a similar

The results obtained were consistent with the lab manual and the unknown sample aligned well with the instructions that were given. The unknown sample was labeled “3” which was then combined with HCl and centrifuged, decanted, combined with more HCl, centrifuged, and decanted again. The precipitate formed from the two latter steps was then boiled and then combined with acetic acid and Potassium Chromate to check for the presence of Pb2+. Upon mixing the precipitate with acetic acid and Potassium

of the ongoing developments and research efforts on nanowires. It is a brief survey of the types of materials used and the applications associated with nanowire research. It is a method combining laser ablation, cluster formation and vapour liquid solid growth (VLS). In this process, laser ablation was used to prepare nanometer-diameter catalyst clusters that define the size of wires produced by VLS growth. This approach was used to prepare bulk quantities of uniform single-crystal silicon and germanium

“pressure versus flow rate.” When conditions are "wrong," hydrates, waxes, or asphaltenes form and come out of the well stream fluids, plugging up flowlines and processing equipment. So, what are hydrates? Hydrates are crystalline, ice-like solids that form when small gas molecules, such as methane, ethane, and propane, are trapped in hydrogen-bonded water cages under high pressure and low temperature conditions. Hydrate nuclei form from the films of water on the tubular walls. The crystallization

The complex and interesting optical properties can be shown clearly on Nanostructured metals the collective oscillations of the conduction electrons termed plasmons lead to most striking phenomenon encountered in these structures are resonances . Plasmon modes exist in a number of geometries and in various metals — most importantly in noble metals such as gold, copper and silver. Under certain circumstances plasmons are excited by light, which leads to strong light scattering and absorption and

Material chemistry is important as it leads to synthesis of advanced materials with new and superior properties and improved compositions. It is one of the integral parts of material science. It mainly deals with four components. (i)Materials, (ii) Synthesis and processing by different possible routes, (iii) Structure and Properties and finally (iv) Characterization and evaluation. Here the oxygen carrier chosen for the experiment is a mixed oxide of both Cu and Mn. Cu and Mn both belong to transition

In this experiment, I was unable to complete the tests that would suggest isolation success. If the melting point of the experimental caffeine was tested, the experimental melting point would need to be 238o Celsius to be successfully isolated. A melting point lower than this would suggest that the isolate was impure. If a TLC plate was performed on the crude caffeine and the isolate, the crude would have multiple retention factor values while the isolate, if isolated successfully, should only have