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How many valence electrons does titanium have?

Titanium's atomic symbol is Ti, and its atomic number is 22. It belongs to the transition metal group and can form compounds at an oxidation state of +4. Titanium's abbreviated electron configuration is [Ar] 3d2 4s2. This shows which valence electrons can be lost in a bond with other elements. Examples of compounds include titanium oxide (TiO2), titanium tetrachloride (TiCl4) and rutile (TiO2).

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How fast can a man run in miles per hour?

It also appears that Usain Bolt can sustain his average speed at the 200 meter dash, which he was able to run in 19.19 seconds. His average running speed for this event is at 23.31 miles per hour.\n\nFor sustained long runs, champion long distance runner Wilson Kipsang Kiprotich ran the 26.2-mile full marathon event in 2 hours, 3 minutes and 23 seconds in Berlin in September 2013. This means that Kiprotich maintained a running speed of 12.7 miles per hour for 2 hours.\n\nA study conducted by the Southern Methodist University shows the variables that places the limits on human running speeds. T..

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What are interesting facts about the kingdom Plantae?

The most striking characteristic associated with plants is their green color. The greenness associated with plants is a result of chlorophyll, a pigment necessary for capturing light energy, which is vital to manufacturing carbohydrates, starch, sugar and other nutrients. Without the ability to break down these nutrients and soak in sunlight, the majority of life on earth would cease to exist. Moreover, plants provide the essential oxygen humans need to breathe, cures for a number of ailments and food to help sustain human life.\nAnother crucial contribution of the plant kingdom is its ability..

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How many miles is Uranus from the sun?

Astronomers use a term called astronomical units to measure vast lengths in space. An AU is equivalent to the average distance between the Earth and the sun. This means that Uranus has an average distance of 19.2 AU from the sun.\nUranus was discovered by John Flamsteed in 1690, making it the first planet discovered in the modern era. At the time, Flamsteed thought Uranus was a star in the constellation Taurus. This idea was accepted until 1781, when Sir William Herschel discovered that Uranus was actually a planet.

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What is the pH of the stomach?

About states that the pH of the stomach is lowest in the morning before a person eats breakfast and highest after a person eats a meal high in protein. Lower pH values indicate that the fluid in the stomach is more acidic. A stomach acid test measures the acidity of an empty stomach, according to MedlinePlus, which advises that the normal result of this test is a pH between 1.5 and 3.5.

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Where does bile come from?

The purpose of bile is to break fats down into their component fatty acids during the process of digestion. After the bile has completed its work, the body can then absorb the fatty acids through the digestive tract. While bile is a necessary chemical in the human body, consuming it would have toxic results.

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Why doesn't oil dissolve in water?

In water, the electronic charges are localized on specific atoms, and the charges on an oil molecule are de-localized over all of the atoms. Thus, water will dissolve with other polar molecules but will not dissolve with oil. When oil and water are combined with one another, they tend to separate, with the oil accumulating into one glob on top of the water. The oil floats because it is lighter than water. When the oil and water are mixed together, the oil will form little balls throughout the solution of water before it floats back to the top.\n\nDetergents have polar ends, which combine with ..

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Where does Valero gas come from?

Valero Energy Corporation began in 1980 as a small, independently run energy company, and it is now a Fortune 500 company with over 6,800 locations throughout the U.S. and U.K with its headquarters in San Antonio, Texas. The company produces a number of different types of gasoline products. It manufactures a regular, conventional gasoline formula, as well as a reformulated gasoline line of products, including winter, summer, Arizona-specific and California-specific blends. Valero also produces a brand of gasoline that features very low sulfur levels, specifically designed for the state of Geor..

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What is the halfway point of a year?

The precise midpoint of a year of either length is noon of the specified day. This does not take into account that one year by the Western, or Gregorian, calendar, which relies on the movement of the sun, is slightly longer than 365 days but shorter than 366 days. July 1 or July 2 is also only mid-year by this particular calendar. The lunar calendar year is only 354 days long.

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What are cell cycle checkpoints?

The G1, or first gap, checkpoint makes sure that the cell is big enough and contains all necessary ingredients to begin mitosis. The cell must receive a signal before it continues with the cell cycle; without the signal, the cell goes into the G0 state, where the cell has been taken out of the cell cycle and is not actively dividing. With a "go" signal from G1, the cell moves into the S phase, where DNA begins to replicate. After DNA replication, the cell goes into the G2, or second gap, stage, a checkpoint that makes sure all DNA has been accurately replicated. The final checkpoint, the M, or..

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