Chemistry Page 4

The objective of this experiment is to determine the percentage of calcium carbonate (CaCO _3) in toothpaste, by performing back titration since calcium carbonate is insoluble in water. An exact volume of hydrochloric acid will react with a weighted portion of toothpaste sample (CaCO _3). After reaction is complete, the excess hydrochloric acid is back…

Enzymes are a biological reaction that remains unchanged, most enzymes are chemical of hydrogen peroxide which changes that release energy and build new materials for cells and tissues. Each enzyme has its own specific shape, but without enzymes, the digestive system will take weeks and weeks to digest food. When the enzyme changes shape it…

Separation in distillation occurs because from the mixture the lighter components will vaporize easily than the heavier components, because they have the lowest boiling point and higher vapor pressure. The vaporized component is then recovered as a distillate while the heavier component is withdrawn from the column as a residue. This principle is normally the…

By decreasing the density while maintaining strength and without adversely affecting cost. Introducing new aggregate sin to the mixed sign is a common way to lower a concrete’s density. Normal concrete contains four components, cement, coarse aggregate, fine aggregate and water. The coarse aggregate (granite or gravel) and fine aggregate (sand) are the components that…

A is a device that makes visible to the human eye the presence of certain particles and cosmic rays. This paper will discuss the process in which a successful chamber prototype was developed. This paper will also discuss how the chamber utilizes the properties of a supersaturated environment to detect these particles. Finally, plans for…

Chlorine is one of the world’s most widely used chemicals, the building element vital to almost every United States industry. We use chlorine and chlorine-based products whenever we drink a glass of water, buy food wrapped in plastic, purchase produce in the supermarket, pour bleach into a washing machine, have a prescription filled, print out…

For many years now there has been a constant argument over whether or not the medicinal uses of marijuana are enough to overlook the side effects of the drug and make it legal for medical use in the United States. To many people, when they think of the plant marijuana, technically known as Cannabis Sativa,…

Each spiraling strand is comprised of a sugar phosphate backbone and attached bases connected to a complimentary strand. The complimentary strand is connected by non-covalent hydrogen bonding between paired bases. The bases are adenine, thymine, ctyosine, and gaunine. The fundamental building block of DNA is the nucleotide. The nucleotide has three parts. A nitrogen-containing pyrimidine…

Computers reproduce information at almost no cost. A push is well underway to invent devices that manufacture at almost no cost, by treating atoms discretely, like computers treat bits of information. This would allow automatic construction of consumer goods without traditional labor, like a Xerox machine produces unlimited copies without a human retyping the original…

Two types of lighting are the most popular used today; incandescent and fluorescent. Incandescent light, the most commonly used type, is what people tend to use in their homes because of the softer light it gives. Car lights and flashlights are also incandescent. An incandescent lamp will give off differing amounts of light depending on…