It was expected for the Zinc to undergo a change but it was unexpected for the solution to change, from light blue to clear. Zn(s) +2H+(aq) Zn2+(aq)+H2(g) Reduction of copper Sulfate: As more zinc was added, the color of the solution changed from a light blue to a foggy white. The zinc bubbled and changed from silver to red. After the solution stopped bubbling this meant that the reaction was then complete. Shown below is the final product.Usually during a chemical reaction it is understable for there to a noticeable change, which is why it was expected to see a foggy white color during the reaction.
TLC was used to identify the actual unknown product as well as other products/reactants present in the filtered solution. The procedure was conducted by placing a TLC plate in a developing chamber that is filled with a small amount of solvent. The solvent cannot be too polar because it will cause spotted compounds on the TLC plate to rise up too fast, while a very non-polar solvent will not allow the spots to move. The polarity of the spots also determines how far it moves on the plate; non-polar spots are higher than polar ones. After spots on the TLC form, the Rf values are calculated and used to analyze the similarity of the compounds.
In precipitation process, large volumes of sludge are generated which can present dewatering and disposal problems , as well as re-carbonation of the softened water are needed . Ion-exchange resin have been widely used to remove calcium and magnesium ions due to their many advantages, such as high capacity and fast kinetics [12-14]. However, ion-exchange resins must be regenerated by chemical reagents when they are saturated and the regeneration can cause serious secondary pollution. In large scale, application of resin is expensive . In recent years, various method such as nanofiltration [15, 16], capacitive deionization , electrodialysis , electrochemical treatment  and, adsorption [20, 21] have been widely studied for ions removal from aqueous solution, especially water softening.
The ‘Silver Lining’ to Tooth Decay Tooth decay remains a thriving problem, to which an exemplary solution is yet to be discovered. Dr. Carla Meledandri and Dr. Don Schwass are in the works of developing what appears to be the ‘silver lining’ in the issue of tooth decay. Schwass’s envisioned a better approach to treating tooth decay, Meledandri’s expertise in the chemistry of nanoparticles bring that vision to life, giving way to a more promising future for teeth fillings. The pair proposes the concept of nanoparticles of silver (Ag) in miniscule concentrations display properties of more effective anti-bacterial effects relative to the current process of treating tooth decay. Schwass expresses his quest for the perfect solution was driven by
Some common metal fabrication mistakes which need to be avoided are: Mistakes made at the production level: • Leaving Scratches It is very important to give a clean finish to the metal so that scratches can be avoided and the surface of the metal is free from crevices and corrosion caused by the scratches overtime. • Distorted
Iron quantity in our body is relatively small because an excess of it can damage our tissues; therefore, iron homeostasis is crucial in our body. Iron is regulated in the human cell in order to avoid damaging the human cell and tissues, and to make up for it being lost through the shredding of the epithelium cell. Iron is needed for several functions in the body. It acts as a cofactor
Although it was preferable to avoid pipeline burial due to the length of time it can take for re-colonisation by marine species it was considered necessary to bury Pipeline A. Pipes A and B are both made of high quality corrosion resistant material, able to withstand high pressure and will be protected against upheaval buckling in order to avoid pipeline rupture which may result in oil spills. Although crossings of pipelines should be avoided if possible it was necessary in this case. Both pipes were laid as perpendicular to the existing pipe and separated by a distance mutually agreed by both pipe owners. All exclusion zones on approach to the BLP were taken into account in order to avoid damage to the pipeline or facility, or injury to
This means that it can lessen harmful pollutants that surround the environment. Due to this, several researches have already been conducted in some countries like Vietnam that focused on the discoveries on the benefits of using TiO2 (Vietnam Academy of Science and Technology, 2012). Graphene Oxide Combination of Titanium Dioxide and Graphene Oxide Synthesis Air pollution is an infintesimal issue that definitely caused different harmful effects in environment and humans. The researchers tried to explore possible ways of cleaning air through new ideas and discoveries. With the help of the related literature which served as the basis of the researchers, they were directed to the idea of the product, paint with titanium dioxide and graphene oxide.
This could be caused by the rounding done when doing stoichiometry. Misinterpretations in the final experimental amount could be because of leftover aluminum wire. However, regardless of the yield being the greater amount, this experiment proves the Law of Conservation of mass. Appendix: This report discusses an experiment done with copper metal. Several reactions were run with it, which produced different copper compounds to in the end finally recover the original amount of copper.
The second method is more predictable, underground mining which consist of longwall, as well as room and pillar mining. The difference from surface is that this process of extraction is used for the minerals and ores that are buried too far underground. The Victaulic can provide efficient extraction techniques leading to cost efficient, increases safety and decreasing the need of future fittings. However, the different techniques are used depend on environmental and economic