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What is the molecular geometry of C2H2?

Acetylene forms an explosive gas in the presence of air. The triple bond of the molecule stores a large amount of energy that readily oxidizes to form a more stable molecule. This oxidation occurs rapidly, and the release of energy is an explosion. Acetylene is a common gas for fueling welders' oxyacetylene torches. When dissolved in acetone, acetylene becomes much less explosive. The gas cylinders one finds in welding shops contain this acetylene-acetone solution under pressure. Calcium carbide reacts with water to produce acetylene. Old carbide miner's lamps use this reaction to cr..

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What is the meaning of evaporation?

Warmer liquids evaporate quicker than cooler liquids. This is due to the fact that adding more energy to a liquid causes some of the molecules to become energized enough to release the liquid into the air. An example of this is when a pot of water boils on a stove. Once the water gets hot enough, liquid water converts and changes phases into a gas; if enough of the water is evaporating, it becomes visible as steam. Cold water can also evaporate.\nMolecules in a liquid actually have different levels of energy. When this happens, some of the water converts into gas; that is why wind can increase..

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What is EOR?

As of 2014, there are three methods of oil extraction that are considered EOR. The first is thermal recovery, which involves heating the oil in the well. The second method involves injecting chemicals into the surface tension of the well. The third method is natural gas injection, in which the gas dissolves or mixes with the oil. All three methods increase the oil's ability to flow, making it easier to extract.

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What is the Lewis structure for XeF4?

F is the chemical symbol for fluoride, while Xe is the chemical symbol for xenon. The dots surrounding the chemical symbols are valence electrons that are drawn in pairs based on their location in the atom. The lines also represent valence electrons, which in this case are bonded pairs between atoms. Xenon tetrafluoride has a total of 32 valence electrons.

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Why is soap a base?

When dissolved in water, bases will be slippery to the touch, have the ability to conduct electricity and neutralize their properties during reactions with acids, all of which are prominent properties of soap.Soaps can also be produced from oils, and properties will vary depending on the type of fatty acid used; long chain fatty acids produce insoluble soaps, whereas shorter chains, such as coconut oil, produce a highly soluble soap.

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What is the oxidation number of calcium?

The oxidation state is a way to determine the number of electrons being added or removed from an atom. When electrons are removed, creating a positive atom, then the atom has been oxidized. If electrons are added, making a negative atom, then the atom has gone through reduction. There are several rules which are used as a standard to determine the oxidation state of an atom. The oxidation state of a pure element is always going to be zero and the structure of the element has no effect on the oxidation state of the given element. The oxidation state in a neutral compound is always going to be z..

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Why is it important to conserve water?

Water can be conserved by doing things like taking shorter showers, fixing drippy faucets, not running a dishwasher until its full and by not mowing lawns until the grass is 2 1/2 to 3 inches in height. Conserving water ultimately helps to ensure that future generations have less of a chance of running out of the water, which is a resource that all life on Earth needs in order to survive.

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Why do transition metals form colored compounds?

Electrons at the d orbital affect the color of transition metal compounds. Therefore, different electron bonds in molecules allow manganese, for example, to form compounds ranging from dark purple to pale pink. These 5d electrons become more filled as one moves from the left to the right on the periodic table. Since the d orbitals are filled in zinc, it forms nearly colorless compounds.\nElectrons absorb light of a certain wavelength to ascend to the next orbital, and the human eye sees the wavelengths that are not absorbed. Therefore, the energy gap between the higher and lower orbital levels..

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What is the heaviest metal on the periodic table?

Osmium is so dense that a 2-cubic-foot block of the metal weighs as much as an automobile that weighs 3,400 pounds. Metallic osmium is very difficult to make, and it is hard, brittle and mainly used to manufacture tough alloys. As of 2014, osmium is retrieved during the processing of nickel and platinum ores.

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What is platinum made of?

While the discovery of platinum is traceable to the 1730s or 1740s, no one is sure who made the discovery, according to About.com. Pre-Cambrian Indian artifacts show its use in a relatively pure form. Reference.com says the Spanish make reference to the metal in mining for silver in Central America in the 1550s, but they considered it an impurity, so it was discarded.\nWhile halogens, sulfur and caustic alkalis attack platinum, it doesn't react with oxygen even when heated to a high temperature. It does absorb large quantities of hydrogen, which it releases as red heat.\nPlatinum is a sil..

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