From the data obtained it was clear to categorize the solutions in the experiment according to their conductance values. The solutions whose ions dissociate fully in aqueous solution produced the highest conductance while those that dissociated partially gave lower conductance and hence were classified as strong and weak electrolytes respectively.
Alcohols (e.g. ethanol) react reversibly with carboxylic acids (e.g. Propionic acid) to produce esters (e.g. ethyl propionate) and water (H2O). The reaction mechanism: involves protonation of the oxygen of the carbonyl group, allowing
nature of biological molecules found in the cellular level, the task of studying cells even with the use of microscopes is a tedious task because of the tedious differentiation of biological molecules from each other. Biosensors have been a boon for scientists as they have
To do this, drag the beaker by left clicking on it below the first balance which contains the copper slug. Now right click on the first balance and select pour/decant. The copper slug will drop into the beaker. To measure the total mass of the beaker and the
The faster rate of change is because at Alcan all the departments have their own IT employees who work for them. Thus each department tries to give their most and their best. The cost for IT is around $300 Million for Alcan which is a huge amount and shows its efficiency. Still, $200 million were spent on IT by the IT department.
Canned new releases, the language of spin, and the use of trigger words, has influenced the truth and honesty that should be there when events are interpreted. As the sources of news commentary have increased over the years, the transparency
The main objective of this experiment is to standardize i.e. find the exact concentration of Potassium Permanganate Solution. The concentration is expressed in Moles per litre (M). A 0.02moldm-3 is prepared and its exact molarity determined by titration.
One example of biofuel currently gaining popularity in the market is biodiesel. Based on this fuel’s properties in terms of emissions and price, biodiesel is becoming attractive to car and truck owners.
From these graphs, it was possible to determine the rates of the reaction.
Hydrogen peroxide decomposes to H20 and O2 and the process is highly exothermic. The rate of decomposition of hydrogen peroxide
The latest and short term solution which is considered these days is the use of nuclear power. Nuclear energy is best utilized to the middle and high scale of generation of electricity. In 1939, Nuclear energy was introduced with the discovery of nuclear fission. The major
ons wishes to come up with the best energy wedge that can be implemented and reduce carbon emission by half in the next 50 years or maintain the current rate holding it constant for the same number of years (Levy, A 2020 Low Carbon Economy). It is not easy as it sounds but it is
According to the text, global warming is a steady rise of the world temperature which causes melting of the North and South Pole regions causing rising of the sea tides. That's why fuel cells have a great advantage as compared to other traditional sources of energy for they are more efficient and cause less pollution of the environment.
concentration from peak area is 1.045 and that for the sample concentration from peak height is 0.938 there is only a very small difference of 0.107. The magnitude of this error rate difference is insignificant.
The objective of this experiment is met. The concentration of the
It is also not known whether the method affects the durability of the bridges.
The corrosion method being tested is impressed current cathodic protection (ICCP). A titanium mixed metal oxide is employed as an anode, which is applied on the upper
The selected method for this experiment uses the first law of thermodynamics.
This formula was necessary for determining the temperature of heated water. Based on this formula, the temperature of a substance can be
For example, most enzymes are sensitive to pH and temperature. The same is true for some catalysts such as manganese salts that are pH sensitive and heat sensitive, requiring controlled conditions to work.
part of wine production, and with more than 5000 varieties being cultivated, it is very crucial that the process of wine making be as versatile as possible.
Chemistry has been a part in the production of wine, and in its research and development. Wine makers use chemistry in
Then fill the pipette/burette with water till the water reaches the mark on the burette/pipette. Thereafter, transfer the measured water into the canonical flask. Now weigh the canonical flask when it is filled with water. Repeat the
A number of activities, writing guide, and assignments have, thus resulted from these efforts. Some of these activities advance writing as a tool for developing critical thinking skills and learning chemistry while others provide guidelines to
They only change the rate of reaction (Kovarik & Allbritton, 2011).
The structures of enzymes comprise of a globular protein and a cofactor. The bonds holding the proteins in their structures are affected by temperature and pH changes. Such changes affect the
An analyte can be defined as the substance or component that is of interest in a chemical analysis procedure. It is the chemical constituent that is being measured. A matrix, on the other hand, can be defined as the chemical components of a
And there was no change observed when using increased RF power as well. A good reduction of S/B was observed when operating with high nebulizer flow rates eg: for compounds like Mg, Cr and P [at a wavelength of 213.617]. Approximately 10.9 –
In other words, radiation can be electromagnetic or particulate. Examples of electromagnetic radiation are x rays and gamma radiation whereas examples of particulate radiation are alpha radiation and beta radiation. The nonionizing
It is a widely known preservative and antibacterial chemical in skin creams and cosmetics. The figure below highlights and shows the figure representing the molecular structure of the above named compound.
The compound’s molecular formula is C8H10O2, and
For instance, the metal of interest was copper and its amount in the ore sample taken from the site was to be determined. Chemists usually analyze the rock samples to find out if the underground deposits are economically feasible
Sparkle Super-Whitening Toothpaste. The SOP, QC 141.10 vividly describes the procedure associated with this process (Ahuja & Scypinski, 2011).
The SOP states that there are three main solution required during this experiment: A mixture in the ratio of 85:10:5 of
This paper explores effects of acid rain.
Acid rain damages the environment and human health. The rain affect humans, indirectly, through the foods they consume and their derived water vapor affects people, directly, when inhaled. The vapor
This paper looks into the experimental procedure, findings and discusses the findings from generation of the light using two quenchers.
Quenching of luminescence occurs when impurities are added to a phosphor ,when
The wastewater from the chemical industry can be used in the industry to clean, to cool machinery and other industrial purposes that do not require very clean water. According to research, water recycling within many companies has proven to cut short expenditure on water by 40% thus proving it as an important process to carry out.
Its molecular formula is presented as C29H31N7O • CH4SO3 with molecular weight 589.7. The structural formula is as figure 1
Chemical designation is 4-[(4-methyl-1-poperazinyl) methyl]-N-[4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl] amino]-phenyl] benzamide
Some decade’s age, a Nobel Prize winner biochemist, Szent-Gyorgyi enlightened the world about the extensive advantages of hydrogen use and declared it even more important than oxygen for the existence of human race on this planet. Body water acts as a fuel to burn oxygen and hydrogen for the sake of producing energy.
Errors in experiments influence the expected results thus causes changes in values of the data obtained at the end of the study. Most errors especially in the laboratory set up, arise from mistakes in measurements. A laboratory consists of various equipment which, when used improperly result to errors.
However, due to industrialization, the once beautiful river is now polluted and dangerous to human health due to PCBs (Manning).
PCB or polychlorinated biphenyls, is made up of 209 individual chlorinated biphenyl rings
In alloys, the physical properties of strength, corrosiveness and conductivity are determined by composition of transition metals and trace elements like carbon and manganese. In application, precisely determining the quantity of a transition metal in steel is
Thus, there is a need to develop alternative renewable sources of energy such as the solar. In this experiment, a solar cell would be constructed for conversion of sunlight energy into electrical power for use in electrolysis of water. Even though
Lipids that have fatty acid esters undergo hydrolysis reaction catalyzed by strong acid or base to yield products of saponification process. Saponification was popular in the early 20th century that saw the development
1) In some cases aspirin has the ability to lower the risk of a possible heart attack. Any patient is not advised to start taking aspirin without doctor’s consent. But it is highly likely that aspirin will be recommended to patients who had a
They react violently with group one’s elements to form salts. Reactivity generally decreases down the group from fluorine being the most reactive and bromine the least reactive of the group.
These elements react
In this case, bromine, which acts as an electrophilic compound, is attacked by nucleophile cholesterol to form insoluble dibromocholesterol that precipitates. However, to reestablish the double bonds, zinc dusts are used, which removes the bromine atoms from the
To date, the element is acquired through electrolysis of hydroxide or chloride because it is not found freely in nature (Roza, 2007). It was until the eighteenth century that Potassium and sodium were distinguished. Potassium is an essential dietary mineral.