Lustig selected scientific papers in their article to support their claims. Authors support that sugar as bad as alcohol and cigarette. The main claim Lustig is trying to make is that fructose can trigger processes that lead to liver toxicity and a host of other chronic diseases” and that “a little is not a problem, but a lot kills”. Reader will not know what quantity is a lot. Author did not give a clear evidence to support this main claim.
She was asked to develop a synthetic material that might offer a lighter, more fuel-efficient alternative to metal reinforcements in car tyres. She stumbled on a surprising compound, a liquid crystalline solution that could be transformed into astoundingly strong fibers. Of them, what we know as Kevlar. Topic 2: Science Napalm’s origins stem directly from the use of flamethrowers during WWI. Even though widely used, flamethrowers were still ineffective, being extremely cumbersome (soldiers had to carry both a petroleum tank and a gas-filled tank, both highly flammable and vulnerable to enemy fire) and unable to create a fire that burned for any prolonged period of time.
12. The TLC data obtained is provided in a table below. The TLC data was conducted solely in a 9:1 hexane/ethyl acetate solvent solution as opposed to the 1:1 and pure hexane solution as well. This was due to the lack of time, but as explained in number 7, a very polar solvent (1:1 solution) or non-polar solvent (pure hexane) is not ideal when obtaining
Given that benzene rings are used commonly in the production of many organic compounds, the capability to make substitutions to benzene is critical. This can be accomplished by the use of Electrophilic Aromatic Substitution (EAS) as Nucleophilic Aromatic Substitution (NAS) is not possible because of the electron-rich benzene ring, which does not have substituents that withdraw electrons. Since the density in the
The size of the flue gas treatment equipment can be reduced. The flue gas is primarily CO2, suitable for sequestration. Because nitrogen from air is not allowed in, nitrogen oxide production is greatly reduced. Keywords: CO2 rich flue gas, Sequestration, Reduced flue gas volume, Reduced NO Introduction In general process for the combustion in an IC
Ritter Reaction Alcohols is converted by a strong acid to a carbocation, which adds to the negative nitrogen. The immediate product tautomerizes to the N-alkyl amide. Only alcohols that give rise to fairly stable carbocation react; primary alcohols do not give the reaction. The carbocation need not be generated from an
Styrene Styrene is a toxic chemical that goes by many names such as ; Vinylbenzene , Ethenylbenzene , Phenyl Ethylene, Benzene and etc. Styrene is a colorless liquid that has an unsaturated ring that contains alternating double and single bonds ( Aromatic odor ). *This is an example of an aromatic compound known as Benzene, as shown above the unsaturated ring contains alternating double and single bonds. Styrene is a very important component that is used in making everyday products that you and I use e.g components for cars, trucks, trains, and etc. Styrene helps make very reliable, strong, flexible products that we use everyday and everywhere.
First of all, the reactant ethyne used in all of the reactions was the product of another reaction between water and calcium carbide. However, due to the fact that neither the calcium carbide nor the water can be guaranteed to be pure, the reaction to produce ethyne may have created other unwanted by-products. Additionally, as ethyne itself is very reactive, the possibility exists that some ethyne may have reacted with the waste products to create new, unwanted compounds, further reducing the experiment’s accuracy by adding contaminants. In addition, when the result of the combustion reaction of ethyne is being observed, it is important to ensure any observations, specially the smell and smoke produced, are created by the reaction and not from burning the wooden spit, which also generates smell and smoke, especially when it is extinguished. This can be remedied by extinguishing the spit away from the test tube at a place that is not upwind of the
Combination of antioxidants is useful for the treatment of toxicity from cadmium in intestine. INTRODUCTION: Cadmium is very toxic heavy metal and have adverse effect on human body it disturb enzymatic activities of cell , tissues and metabolic processes of human body(Irfan et al., 2013).it was first discovered in 1817. It is noncorrosive so it is use in electroplating and galvanizing.it use
All the data used for analysis of the neutral compound was received from Andrew ______, since there was not enough sample left to perform MP analysis after the recrystalization step. Since the ranges for these melting points are larger than the ranges observed for the recrystalization product, it can be inferred that these samples contained impurities, and also possibly traces of ethyl acetate or water, depending on the solvent they were in. These melting points can also be used to make a rough guess about the identities of these compounds, as seen later in this report. According to the MSDS pages for salicylic acid, 4-nitroaniline, and p were 159, 148.5, and 101 respectively. The melting points for the acidic and neutral compounds were hence too low, and the melting point for the basic compound was too high.