computationally predicted the dipole moments of 5 different analyte molecules using the program Spartan. We constructed the molecules online as the program then calculated their dipole moments (polarity). We then experimentally determined the 5 analyte molecules retention factors using the TLC method in the lab. Polarity in organic chemistry refers to a separation of electric charge leading to a molecule having an electric dipole moment1. To determine whether a molecule is polar or nonpolar depends on a
Introduction In this experiment, we worked with paper chromatography. Before discussing the experiment in full detail, we must first review what exactly paper chromatography is. Paper chromatography is a certain technique used for separating different mixtures. It uses a specific type of paper made up of cellulose, and has a solution that separates the mixture into the multiple substances that make up that mixture1. Paper chromatography can also test the purity of the mixtures as well2. Paper chromatography
is near impossible since colors can look identical to the human eye while differing in composition. Therefor, further examination of the components of the ink is needed. Ink is a mixture of substances and these substances have varying molecular polarities. The intrinsic properties of the components of the ink allows for the separation of ink through adsorption chromatography, where the ink is separated based on the attraction to a moving phase (liquid) and stationary phase (TLC plate). Using the
This was done by adding caffeine to water. The caffeine dissolved immediately in water as water is a polar compound. The polarity is due to the dipole interaction formed due to the electronegativity difference between oxygen and hydrogen, where oxygen is more electronegative and thus has a positive charge. Caffeine is polar due to many oxygen-carbon and nitrogen-carbon polar
little more. Battery, also called an electric cell, is a device that converts chemical energy into electricity. All batteries contain an electrolyte, a positive electrode, and a negative electrode. There are two general types of batteries. Batteries in which chemicals cannot be reconstituted into their original form once their energy have been converted these are called primary cells. Batteries in which the chemicals can be reconstituted by passing an electric current through them in the opposite
A Critical Analysis of the Effects of Chemical Castration and Physical Castration on the Recidivism Rates of Sex Offenders Introduction This paper examines the effects of chemical castration and physical castration on the recidivism rates of sex offenders. Using theory integration or the multifactor approach, the findings reveal there are several factors influencing sex offender recidivism. Both chemical castration and physical castration have the potential to reduce the recidivism rates of
to water pollution. Problems we see with agriculture are applications of fertilizers, insecticides, and pesticides. We have made vast improvements in the types of chemicals we are using, as to how environmentally friendly they are. In 1985 the amount of fertilizer added to America’s fields was 11.5 million tons. Not only do these chemicals leech in to the soil, but they are also swept off the soils by rain and wind. When these fertilizers reach the water there is a sudden boom in plant growth. When
that make our planet warm enough for habitation are largely invisible. Even water vapor, the main constituent driving the greenhouse effect, is invisible, but whose existence can be inferred when it condenses as one exhales on a wintry day. The chemicals-such as dioxin, PCBs, pesticides, arsenic, DDT, and lead-that we litter our soils, atmosphere, and waterways with are also nearly invisible, especially at the concentrations that we, the users and consumers, are told are "acceptable." Microscopic
carefully clean up spilled chemicals. Some materials can spontaneously combust when mixed (this is especially true of nitrates and chlorates). For the same reason, use separate instruments (plastic spoons, mixing cups, etc) for different chemicals. Label your instruments so that you know what materials they have been in contact with. 3) Mix materials outdoors. Chemical explosives contain their own internal source of oxygen, and cannot be smothered. If you start a chemical fire indoors, it can be nearly
health reports. More and more reports are coming out on the effects of marijuana on the body. Just how harmful marijuana can be is questionable. Some health reports state that it is very detrimental to the body while others are explaining how chemicals extracted from the marijuana plant are being used as medication. The problem is, just what are the effects, and how bad is it for someone who uses this drug? I have picked this topic because I am very interested in the effects of marijuana on
each year in the United States. This is ten times more than was applied forty years ago. It is still unknown as to what type of exact effects these chemicals may have on individuals. Some farmers that have been using pesticides in their fields and developed leukemia are finding that the cause of their disease is from inhaling pesticides. These chemicals are still in use today and most of them have never been tested for the short or long-term effects that they may have on humans. Each year there
Evaluation of the Financial Performance of a Chemical Company The Lee Chew Cheng Wong Chemical Company produces high quality speciality chemicals, and it exports around 85% of its output to many countries and regions. Since the establishment in the mid 1980 this company has emphasized the shareholder value. To keep this focus, a new Chief Executive Lee Shan Loke Teo has proposed a lot of new policies. This assignment evaluates the financial rations with Sun See Chemical Company and average industry, and presents
Chemical Control Agents Used Against the Gypsy Moth The gypsy moth (Lymantria dispar) is a highly disruptive species that can, and has played a distinctive role in the lives of many organisms. Included in these organisms are various deciduous trees and shrubs, wildlife species that share the same environment, and even humans. The gypsy moth destroys the beauty of woodlands via defoliation, alters ecosystems and wildlife habitats, and disrupts our own lives. It should therefore come as no surprise
Identifying Five Unknown Chemicals I was given 5 unknown samples, which are sodium chloride, sodium thiosulfate, calcium carbonate, sodium bicarbonate and sodium nitrate and these samples are all white and solid. However, I don’t know which substance is which sample and I was only given some information about the physical and chemical properties of these substances. In order to identify the 5 unknown samples, knowing which sample is which substance, I have to carry out this experiment,
desired size of cornrows. Cornrows is one of the healthiest of all braiding hair services. Cornrows are good for your hair because they tend to encourage growth. Many people get cornrows in their hair because they last a long time, and they require no chemicals that can harm the hair. Cornrows have existed for a long time but not until recently have they become more acceptable. The end result is only limited by your imagination. They are very versatile. Braids offer endless styles and patterns. Supplies
is made up of a complex network of nerve cells, called neurons and of brain chemicals, called neurotransmitters. Neurotransmitters transmit messages from one neuron to another. Two of these neurotransmitters are not produced in sufficient quantities in a depressed person’s brain. Because of this lack, too few messages get transmitted between neurons and the symptoms of depression occur. In Clinical depression the chemicals in the brain are out-of-balance. New technology allows researchers to take
profession, nor is it cheap. With farming, comes many risks - some even life threatening. As with any other profession, equipment is needed to perform the job effectively. In this field, the equipment is very costly. The prices of the equipment, chemicals, and seed are increasing whereas the prices of the crop are steady decreasing. How are farmers supposed to make a substantial income when the prices are overwhelming? Can the government not allow a set income for farmers each year, in addition to
confection for all to enjoy." All of King Syphilis' staff applauded loudly, because he tended to behead those who didn't. "Bring us intoxicating chemicals, so that we may celebrate," ordered the king. "I'm sorry, Mr. King Syphilis," replied the servant. "You banished all the chemical engineers to the powder mines, so we cannot make the intoxicating chemicals anymore." King Syphilis was quite mad. Nobody talked back to him and go away with it. "Bring me my plutonium phasor gun, so that I may vaporize
of the plant vary in chemical constituents. In 1993 researchers discovered 400 to 500 chemicals. Some of the major types of chemical constituents in marijuana preparations include acids, alcohols, aldehydes, and amino acids. Cannabinoids, esters, enzymes, glycoproteins, hydrocarbons, ketones, lactones, nitrogenous compounds, phenols, pigments, proteins, sugars, steroids, terpenes, and vitamins are others (Carroll 1993). These are among some of the naturally occurring chemicals in marijuana and were
the workings of the brain and to learn the effects of natural and unnatural substances on it. In order to look at chemical effects on the brain, one must first get an understanding for the chemicals as well as how the brain works to interpret and react to signals set out by these chemicals, rhythmically and physiologically. Several chemicals observed include: cocaine (and other chemicals), seratonin, and melatonin. Nature and life are full of rhythms. Rhythms in nature include: day and night