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What are the two practical applications for chromatography paper?

Colored plant pigments and artificial food colors are analyzed using paper chromatography by chemists. In forensics, components of drugs that can range from aspirin to narcotics in blood and urine samples are determined by using it. A car paint sample can be analyzed to determine which vehicle it came from, the vehicle's model and manufacture year. In counterfeiting or forgery, the sample of ink can be analyzed to determine which pen it came from and the kind of ink that was used.Chromatography means writing in color. It is a common technique used for segregating ions or molecules dependi..

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Where can you find a complete 2014 calendar?

The website version of the timeanddate.com United States calendar for the full year of 2014 shows, by default, the dates of the four principal phases of the moon each month. It also indicates various holidays and observances by displaying those dates in red type on the calendar, with a key below naming the observance for each date. Users can also choose whether their calendars display various categories of observances that may include religious and national holidays, equinoxes and solstices, and professional appreciation days, or no observances at all.

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What is the structural formula of carbon monoxide?

Carbon monoxide is created when carbon is burned in an environment with a limited oxygen supply. In this situation, the combustion of carbon remains incomplete, resulting in only half the amount of oxygen combining with the carbon. When oxygen is abundant, complete combustion occurs, and carbon dioxide (CO2) is the result. If very little air is present, pure carbon is created.

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How do bacteria replicate?

Before a bacterial cell divides into two, it must create two identical copies of its DNA and send one copy to each side of the cell. This occurs at the same time that the cell is increasing in volume by also replicating its proteins and other cell structures. Once the DNA has been divided, a special cell wall, known as the equatorial plate, begins to grow partway across the original bacterial cell. The equatorial plate eventually grows all of the way across the cell, dividing it into two.\nBinary fission is a very rapid process. When conditions are right, which for most bacterial species means..

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What is a Belle of Georgia peach tree?

This tree requires abundant sun, but it also needs at least 800 chill hours. These trees are planted 12 to 15 feet apart from each other, and they depend on well-drained soil. They require at least 1 inch of water per week. To ensure that the tree continues to produce, it's important to prune the tree every year. "Belle of Georgia" peach trees grow up to 25 feet, according to Home Guides.

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How did Halley's Comet get its name?

Halley realized that objects seen in the sky in 1531, 1607 and 1682 were actually one single object, a comet, which he predicted would return again in 1758. Although Halley died before the date of the comet's predicted return, it is named after him to honor his discovery and the accuracy of his prediction. Since the naming of Halley's Comet, scientists have followed in the tradition of naming comet's after the scientists who discover them.\nPrior to its identification and naming, sightings of Halley's Comet go back to at least 239 B.C., when it was identified by Chinese ast..

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What is D2 diesel?

D2 diesel fuel is the broad category for the second distillate of crude oil. Ultra-low sulfur grades of D2, such as GOST 305-82, reduce sulfur content to a maximum of 0.02 percent and reduce sulfur pollution emissions.\nDiesel fuel is often used in diesel engines. Diesel engines, also called compression ignition engines, rely on the temperature increase of compression, rather than on spark plugs, to achieve reliable ignition timing and combustion efficiency.\nAs a result of their inherently higher compression ratio for a given power output, diesel engines are more fuel efficient than spark ign..

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What is black rhodium?

One of the primary uses of black rhodium is in jewelry making. Precious metals, such as gold and platinum, are coated using a bath-plating solution made with a fine powdered form of the mineral. Black rhodium plating is exceptionally hard, so it also serves for the manufacture of precision equipment. Its corrosion resistance makes rhodium plating well-suited for electrical components, too. While it has multiple uses, rhodium is a very rare mineral in nature.

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Which animals live in an arid climate?

A true arid climate is characterized by its severe lack of water, which limits or prevents most plant and animal life from thriving. However, animals that live in arid climates have adapted to life with little water. The kangaroo rat converts the seeds it eats into water and doesn't sweat. Addax antelope have special hooves that are flat on the bottom to prevent them sinking in the desert sands. Over 40 species of rodents live in the Sahara desert, as do jackals, hyenas and Mall Fennec foxes.

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Where do lettuce seeds come from?

Once a lettuce plant starts to bolt and produce flowers, the leaves are no longer good to eat, as they taste bitter. It is best to select one or two plants to produce seeds, and mark them early in the season.\nLettuce is a self-pollinating species, meaning that it does not require another plant to produce viable seed. However, given close proximity to another plant, it can cross-pollinate. Therefore, if trying to produce seed, it is best to cover the seed heads of different varieties to prevent cross-pollination.

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