Sio2 Unit 3 Synthesis Report

This lab could have contained errors. The errors could have happened when performing the lab. Some of the possible errors in this lab are:

Abstract: The purpose of this experiment is to use the apparatus shown in figure 7-1 of experiment 6 found in the lab manual, to synthesize [1,3,5-C6H3(CH3)3]Mo(CO)3.(2016 Oleg) With this, characterization of the molecule can be accomplished using the infrared spectrum and NMR spectrum of the synthesized compound. It was found in the IR spectra of the product, that suitable stretches were found associated with the C-O bonds of mestylene and molybdenum. With One strong spectra was found at 1855.3973 cm-1 , one medium strength spectra was found at 1942.6002 cm-1 , and one weak spectra of C-O stretch was found at 1298.8638cm-1 . The 1H NMR spectrum of the product showed peaks at δ 2.28 and 5.25, while the H NMR spectrum of mesitylene gave peaks at δ

Strontium nitrate, the limiting reagent, was poured into the copper(II) sulphate solution, the excess reagent, rather than the other way around. This is a minor systemic error, because even if some of the strontium nitrate remained in its initial beaker, the beaker was thoroughly rinsed out multiple times. The error causes the final mass of the filter paper and precipitate to be slightly decreased, as not all of strontium nitrate reacts with the copper(II) sulfate. This can explain why the percent yield in 92.2%.

After putting the CH2Cl2 to a beaker containing the drying agent anhydrous sodium sulfate, a sticky white solid was recovered.

Materials: Solutions of crystal violet and sodium hydroxide were available in the laboratory which were previously prepared of concentrations 2.00 E-5 and 2.00 E-2 respectively. Deionized water was used

Table 3 shows the magnetic and surface area characteristic of bentonite and bentonite-Fe3O4 composites. Magnetic measurements of bentonite and bentonite-Fe3O4 composites at 293 K. Bentonite particles show no value of saturation magnetization. The process of coating Fe3O4 which has a higher value of saturation magnetization onto bentonite surface caused composites having magnetic properties. The saturation magnetization increased with an increase of Fe3O4 content. Study of silica coated magnetite particles (Fe3O4/SiO2) indicated that saturation magnetization is lower than Fe3O4 [11]. The surface area of composite decreased with increasing content of Fe3O4, because most of the pores in the bentonite blocking with Fe3O4. Futhermore, BET surface

At school, Siobhan asks Christopher why his face is bruised. He explains the fight with Father. Siobhan reluctantly accepts that nothing happened worth worrying over, largely because Christopher cannot remember whether or not Father hit him.Christopher returns from school before Father gets home from work. Christopher gets the key to the garden from the china pot and sets out to retrieve his book. When he doesn’t find his book in the trashcan, he realizes Father might have hidden it elsewhere in the house. He eventually discovers the book in a shirt box underneath a toolbox in Father’s bedroom closet. Though happy that Father hasn’t thrown his book away, he worries that Father will know he has been searching through his things. Just then, Father

Once cooled, the mixture was then transferred to a separatory funnel using the funnel while avoiding adding the boiling chip. 10 ml of water was then added to the mixture. The mixture was gently shaken and the phases were allowed to separate. The funnel was then unstopped and the lower aqueous phase was drained into a beaker. 5 ml of 5% aqueous NaHCO3 was added and then shaken gently. A great deal of caution was taken into consideration because of the production of carbon dioxide gas which caused pressure to develop inside the funnel. The pressure needed to be released so the funnel was vented frequently. The phases were allowed to separate and the lower aqueous phases was drained into the beaker. After draining, 5 ml of saturated NaCl was added to the funnel and then shaken gently. Once again, the phases were allowed to separate and the lower aqueous phase was drained into a beaker. An ester product was produced and was transferred into a 25 ml Erlenmeyer flask. This organic product was then dried over anhydrous Na2SO4 to trap small amounts of water in its crystal lattices thus removing it from the product. Finally the ester was decanted, so that the drying agent was excluded from the final product.

1. Girolmi, G.S.; Rauchfuss, T.B.; Angelici, R.J. Synthesis and Technique in Inorganic Chemistry: A Laboratory Manual. University Science Books, 1999.

First, the silicon replacement replaces organs of the body to silicon and a kind of chemical. Then, I don't believe that person it will be same as person after replaced by silicon which means it may change the shape or something else. For example, let's assume they replace brain to silicon as we know brain save massive of memories, but can not transfer memories to silicon because it’s impossible to be the same person that have same memories and can remember everything from the past. However, the difference is it will be same person and body, but different thinking or may not remember anything from the past which means the memories have been loosed. Finally, I am assuming my friend wants to make opposite decision, I may prove some evidence that

For sample A, I predicted that it was either potassium or sodium because the chloride salt before the experiment was very similar in texture, size, and colour, (small, white/clear, powdery grains). While burning, all three of the samples produced an orange flame that became smoother at the end. As I anticipated, sample A turned out to be potassium. Although, I had trouble distinguishing whether the sample was K or Na because of how similar they were throughout the whole process. As for sample B, my prediction was that it was either zinc or lithium, since they were the only element samples that were wet because water vapour was absorbed from the air. In addition to that, sample B had a bright crimson/orange flame, just like Li, although the overall shape and length of the flame was more similar to Zn. It turned out that sample B is a Zn ion and a Li ion. This seems accurate because the sample had many similarities with both elements, although I wouldn’t have guessed that it was a mix of both elements. Rather, I blamed my perception and the observations I made.

Introduction: In today’s society the amount of Aluminum consumed is not completely recognized most of society only tends to think of aluminum cans, however aluminum is in a wide range of everyday products such as car parts, jets, and in household products in which we use everyday. Due to the large amounts of aluminum used and consumed daily recycling the material is a very important aspect, especially when dealing with cost and energy consumption. The main focus of this lab was to take aluminum cans and chemically turn it into alum, which in turn can be used to remake aluminum products which is a better cost and energy

To tube 2 and tube 3 a boiling chip is added. The two tubes are boiled to remove any residual ether. Next, the tubes are cooled to room temperature and placed into an ice bath to allow for crystallization. The solution is then removed from the solid in each tube and discarded. To tube 2 and 3 ~0.5 ml of H2O is added for recrystallization, the tubes

The remaining NaCl and SiO2 will be combined with H2O, where NaCl will be extracted. The residue will be SiO2, where it will be heated.

A study was done in South Durban using the health risk assessment model adopted from the U.S. Environmental Protection Agency (EPA) on the Health effects of the air pollution from Sulphur dioxide. Inhalation has been identified as the Sulphur Dioxide’s main route of exposure hence it affects the respiratory system. Prevalence range of respiratory diseases like asthma, chronic cough, chronic phlegm, blocked runny nose and sinusitis.