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What are some uses for iron sulphide?

It also acts as a debasing agent to improve machine capability of steel castings, which are used in the production of various steel parts. In the purification of crude phosphoric acid, iron sulphide is used as a reducing agent to remove heavy impurities form phosphoric acid.\nAnother use of iron sulphide is in the production of malleable iron. Iron sulphide combined together with ferrous silicon and ferromanganese is used to increase the sulphur content of steel and iron.\nIron sulphide is also used as a laboratory chemical for the preparation of hydrogen sulphide gas. In hair dyes, paint, cer..

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How long does it take for armpit hair to grow for first time?

The Palo Alto Medical Foundation indicates that pubic hair typically shows up in girls between the ages of 8 and 14, so underarm hair appears between the ages of 10 and 16. For boys, the growth of pubic hair generally begins when they are between 10 and 15 years old, so underarm hair emerges sometime between the ages of 12 and 17.\nKidsHealth discusses "precocious puberty," where signs of maturity are seen in girls before age 7 and in boys younger than 9; with these children, underarm hair often appears at that time.

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How do you use a Meade telescope?

Locating a dark site away from streetlights or any other sources of light pollution makes viewing objects through the telescope easier. This is because artificial light reduces the contrast of the night sky. After finding a comfortable height for the tripod legs, tighten the locking screws on each leg. Proceed to stand the tripod upright.\nTo attach the telescope to the tripod, slide the telescope's mounting bracket into the tripod's mount. Then, tighten the locking screws on the mount to secure the telescope. The moon is a good target to start off with because of its size in the nig..

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Where is the windiest place in the world?

Antarctica not only experiences global wind currents, it but creates currents of its own when cool airs dips from high elevations to lower ones. These winds are known as Katabatic winds. Antartica is not the only place on earth, however, with winds that top 100 miles per hour. During extreme weather conditions, Cap Blanco, Oregon, has had winds in excess of 125 miles per hour. Wellington, New Zealand is believed to be the windiest city on earth. The average wind speed there is about 18 miles per hour, and wind speeds higher than 154 miles per hour have been recorded in Wellington.

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How does light bend?

When a person holds a stick in a pond and the stick appears to bend, that is because the light is refracted on the surface of the pond. The light bends and gives the illusion that the stick is bending, or is at an angle.The density of the material through which the light passes determines the speed of the light. If light is traveling from a less dense material into a one that is more dense, then it will slow down. This causes the light beam to be refracted in an upward direction. This is referred to as "toward normal." However, as a light beam travels from a more dense material into one that i..

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What are some examples and uses of radiant energy?

The term "radiant energy" can be used to describe the energy carried by any form of electromagnetic radiation and is usually used when this form of radiation is emitted from an energy source into its surrounding environment. This energy can be visible or invisible to the naked eye, and it may or may not be felt by humans depending upon its frequency and amplitude. Radiant energy is one of the means by which energy can leave or enter either a manmade or a natural open system.

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What are some bad points about cloning?

Cloning is largely unsuccessful because the process of somatic cell nuclear transfer is problematic. The overall success rate for a nucleus transfer is anywhere from 0.01 to 3 percent. There is also a high failure rate for pregnancies that stem from cloning. Another risk factor is the egg and nucleus not forming cohesively to complete the cloning process.\nAnimals that are cloned tend to be larger than their noncloned counterparts. This is known as Large Offspring Syndrome, and animals that suffer from it are prone to large organs, which causes breathing and bloodflow complications. Cloned ani..

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What causes distended neck veins?

Constrictive pericarditis is the swelling and inflammation of the sac around the heart called the pericardium. The sac tightens around the organ and restricts its function. The condition is sometimes mistakenly diagnosed as a heart attack, according to Right Diagnosis. Symptoms include chest pain, distended neck veins, weight loss, sweating and difficulty breathing. Pericardial effusion occurs when fluid collects within the pericardial sac.\nPulmonary embolisms are blocked blood vessels in the lungs caused by a blood clot, notes Right Diagnosis. Symptoms include chest pain, blue lips, dizzines..

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In what process is water an end product?

Respiration is a multistep process that begins with the breakdown of glucose to pyruvic acid in cell cytoplasm. Pyruvic acid is then oxidized to carbon dioxide and water in mitochondria, which are organelles present within cell cytoplasm. Energy released in the process of oxidation is stored in the form of potential energy of chemical bonds in ATP (adenosine triphosphate). ATP serves as the energy source for cells. It is composed of a nucleic acid, adenine, that is bound to three phosphate groups. The third phosphate group is attached to adenosine via a high-energy bond. The energy needed to c..

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What is a wood face cord?

Cords and face cords both deal with firewood that is stacked neatly and compactly, rather than in a chaotic mass. Traditionally, firewood pieces are stowed so that they lie parallel to one another and do not overlap. People often place them so that they lie along their vertical axis. A standard cord is such a stack of wood that is 4 feet high, 4 feet deep and 4 feet long. A face cord is 4 high and 8 feet deep; it can be of any length. Because a face cord accounts for only two dimensions of the pile, rather than three, it is not a measure of volume.

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