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What is the chemical formula for sodium oxide?

Sodium oxide can be obtained from the reactions of sodium hydroxide, sodium peroxide or sodium nitrite with pure sodium. It also results from the burning of sodium metal in air or from the decomposition of sodium carbonate at temperatures above 851 degrees Celsius. Sodium oxide is considered to be a corrosive substance, and it reacts violently with water to produce sodium hydroxide.

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How much does a curling stone weigh?

According to the New York Times, almost all of the curling stones in the world and all of those used in the Olympics come from an uninhabited 220-acre island just off the coast of Scotland. The stones are common green granite and are cut from the 1,100 foot Aisla Craig that is located on the island. The unfinished stones are then shipped to the mainland to be shaped into proper curling stones. The stones are then attached to a piece of blue hone, another type of granite that creates a seal on the bottom of the stone that is impenetrable by water.

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What is mRNA degradation?

Most cells carry a full complement of genetic material. This genome is "read" in full by messenger RNA. In multicellular organisms, full expression of every gene in every cell would cause catastrophic malformation and impair tissue function to the point of fatality. By breaking down the mRNA that "reads" the code for unnecessary genes, the cellular degradation machinery permits each cell to express only the genes that are appropriate for its role in the body.

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What are the building blocks of lipids?

Glycerol is a simple sugar alcohol compound C3H8O3. Fatty acids, the main building blocks of lipids, are carboxylic acids with hydrocarbon chains typically ranging from 10 to 30 carbons in length. These hydrocarbon chains are nonpolar. Fatty acids can be saturated or unsaturated. Saturated fatty acids have all bonding positions occupied by hydrogens, whereas unsaturated fats have one or more double bonds between carbons. Some common fatty acids include lauric, palmitic, stearic, oleic, linoleic, linolenic and arachidonic acids.

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What is the function of the vasa recta?

Each vasa recta in the kidneys has a small turn in the medulla that transports blood away at a slow rate. This regulation of blood is important for maintaining a countercurrent exchange between the vasa recta and the loop of Henle; these two components work together to process and filter blood to remove impurities before sending it elsewhere in the urinary system and throughout the body. The ability of the vasa recta to regulate blood is critical. This task is what triggers the kidneys to produce and excrete concentrated urine. According to the North Carolina Wesleyan College, the vasa recta, ..

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What is a degradative reaction?

A degradative reaction is one of the different types of chemical reactions. Degradative reactions break down the bonds holding complex molecules to produce smaller molecules. When energy is liberated, the reaction is said to be exergonic.\nFor example, hydrogen peroxide decomposes into water and oxygen in the presence of the catalase enzyme: 2 H2O2 → 2 H2O + O2. This reaction occurs naturally in the body to break down toxic hydrogen peroxide resulting from metabolic reactions to useful end products, water and oxygen. A similar reaction also occurs during the laboratory preparation of oxygen ..

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What is the number of neutrons in lead?

Lead is dense, malleable and has a melting point of 621.5 degrees Fahrenheit (327.46 degrees Celsius). While this metal is highly resistant to corrosion, it is a poor conductor of electricity. Its chemical symbol Pb is derived from "plumbum," which is Latin for "lead." Minerals or ore, such as galena and cerrusite, contain lead. The earth’s crust contains approximately 0.0013 percent lead. \nLead and its alloys have many applications. It is used as a radiation shield for x-ray equipment, a sound absorber and a solder for electrical components. It is also used in the production of lead crysta..

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What is the correct name for Sn3(PO4)2?

Stannous phosphate is used in conjuction with technetium 99m to radiolabel bone and blood prior to undergoing nuclear imaging studies in humans. It is also used as a buffer in methotrexate-technetium 99m radioimaging studies of bone tumors. Additionally, stannous phosphate's antioxidant properties and high solubility in water have led to its inclusion in dental products, such as toothpaste, denture adhesive and cleaning agents. Stannous phosphate is stable at room temperature and non-flammable.

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How do you stop deforestation?

Customers can help persuade companies to adopt good environmental practices by supporting only brands that apply zero-deforestation policies and advocating eco-friendly purchasing habits to friends, family and other people. Individuals who buy products made from virgin forest fiber should ensure the products display a seal from a forestry certification system, such as the Forest Stewardship Council.\nCorporations should implement policies that entail suppliers to manufacture products, such as timber, paper fiber and palm oil, using eco-friendly methods that do not negatively affect natural for..

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How do male ducks fertilize eggs?

According to PBS.org, ducks practice internal fertilization, which means the process takes place inside the hen's reproductive tract. This protects the developing egg.\nAccording to SouthFloridaMuscovyDucks.com, drakes engage in courtship rituals that include head bobbing, exaggerated feeding movements, preening and counter-movements. They also emit calls particular to courtship and stand in specific postures, such as holding their head and tail up.\nAccording to About.com, reproductive organs of birds differ from mammals'. When ducks are ready to mate, their reproductive organs swel..

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