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Is steel an element mixture or a compound?

Steel is an alloy composed chiefly of iron, with some carbon added. Many steels add to the iron-steel mix other metals that give the entire substance desirable properties such as strength, heat resistance, or flexibility. Steel is considered a mixture rather than a compound because the iron does not chemically bond with the carbon and other components. Instead, in simple iron-carbon alloys, the carbon atoms are small enough to intersperse themselves within the open spaces of the iron crystal. In steel alloys involving heavier elements such as nickel, the nickel atoms replace some of the iron a..

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What organs are located on the left side of the body?

Any one of these organs can cause pain on the left side of the body in the event of an illness.Since the stomach is on the left side of the body, food poisoning and constipation can create pain on the left side. Kidney stones can cause severe pain on the left side when the left kidney is affected. MedGuidance states that a hernia is a perforation of the stomach wall that can lead to pain in the lower left abdomen.Other things on the left side that can go wrong and cause pain include an aortic aneurysm, which presents itself as a severe pain in the lower left abdomen. Ovarian cysts often spre..

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How many kilograms does 1 lb equal?

Both pounds and kilograms are units of mass. Kilograms are used widely around the globe because the metric system is used in the majority of the countries throughout the world. Pounds are used mostly in the United States and a few other countries where nations utilize the customary system of units.

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What is the definition of "greenhouse effect"?

The heat coming from the sun that enters Earth's atmosphere is reflected back toward space. This reflected heat is redirected back into the atmosphere, where it is held by the layer of greenhouse gases. Because of the greenhouse effect, Earth is warm enough that water can exist as a liquid.\nIn theory, the amount of greenhouse gases should remain constant; however, human activity has contributed to an increased amount of greenhouse gases, such as carbon dioxide, in the atmosphere. This increase in greenhouse gases may lead to global warming, a rise in average temperatures around the world..

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What is 43 degrees Celsius in Fahrenheit?

Celsius is a unit from the metric system of measurement and is used throughout the majority of the world and in most scientific research. Fahrenheit is a unit in the imperial system of measurement and is used formally in the United States and Canada, and informally in the United Kingdom and much of the Commonwealth. The conversion formula is based on the 180-degree difference between the boiling and freezing points of water in degrees Fahrenheit.

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What is the molecular geometry of H2CO?

Formaldehyde forms chains with relative ease. In addition, it can form a cyclical compound called 1,3,5-trioxane, which is essentially anhydrous formaldehyde; it doesn't contain water. This compound is readily turned back into formaldehyde in an acidic solution. Other forms of formaldehyde found in the lab include formalin, a water-formaldehyde solution of approximately 40 percent formaldehyde with small amounts of methanol to reduce polymerization.

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What is "Antrum Mucosa Erythematous"?

Helicobacter pylori is a common cause for antral erythema, usually diagnosed with a biopsy taken during an endoscopy. Common treatment for H. pylori infection involves a triple-therapy regimen of a proton-pump inhibitor, such as omeprazole, lansoprazole or pantoprazole along with an antibiotic and bismuth preparation for 10 days to two weeks.\nAnother common cause for acute and chronic gastritis is the overuse of NSAIDs, or nonsteroidal anti-inflammatory medications, such as aspirin, ibuprofen and naproxen.\nGastritis, or inflammation of the stomach lining, can be either erosive or nonerosive...

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Is XeF4 polar?

As a result of xenon being the central atom with four fluorine atoms and two lone pair electrons attached to it, the molecule has an AB4E2 structure. The structure gives XeF4 a square planar molecular shape. The bond between xenon and fluorine are polar covalent because of the difference in electronegativity, but the four fluorine bonds cancel each other out. The electronegativity of the lone pair electrons also cancel each other out, making the entire molecule non-polar.

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What minerals are in marble?

During metamorphism, the sedimentary and organic materials found in limestone are chemically altered, resulting in the formation of marble. Exposure to constant heat and pressure cause the calcite crystals in limestone to reform into larger interlocking patterns. The crystals become larger in relation to the length of the metamorphic process. Clay minerals in the marble may also reform into more complex structures and micas as the metamorphic process continues.

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What are the properties of titanium?

Titanium has a melting point of 3,038 degrees Fahrenheit and a boiling point of 5,948.6 degrees Fahrenheit. It is most ductile in oxygen-free circumstances, and it burns in both air and nitrogen. It is a physiologically inert element. It is not magnetic, and it does not conduct heat or electricity well. First discovered by William Gregor in 1791, titanium has the atomic number 22 and the symbol Ti.

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