What material is the best conductor of heat October 23

Other efficient conductors of heat include gold, tungsten, platinum and osmium. Elements that have a low density, and therefore are poor conductors of heat, include hydrogen, lithium, helium and nitrogen. Elements with very low and very high specific

Is helium reactive October 22

Is helium reactive
Helium is a gas that belongs to the noble gas family. It is colorless and has the chemical symbol He. This element has a low boiling point of -268.93 degrees Celsius and a melting point of - ...

What is benzonatate October 20

Benzonatate usually comes in pill form. The medicine is in a capsule and is generally prescribed as something that can be taken as needed but not more than three times per day. Some people have been prescribed benzonatate in order to treat a severe c

Is toothpaste an acid or base October 19

The average pH level of nine toothpastes tested was 6.83 (slightly acidic). They had a range of pH levels, from 4.22 (acidic) to 8.35 (slightly alkaline or basic). Seven of these measured within one point of neutral (a level of seven). Toothpastes co

What is cobalt(II) nitrate October 18

Cobalt(II) nitrate is most commonly found in the form of cobalt (II) nitrate hexahydrate. The hexahydrate is a crystal of cobalt(II) nitrate which has surrounded six molecules of water. It is also reddish-brown. The hydrate is soluble in water and wi

Is I2 polar or nonpolar October 18

All atoms have a certain electronegativity value associated with them that describes how much they pull a bonded pair of electrons towards themselves in a covalent bond. When a covalent bond is formed between two atoms through the sharing of electron

What is 2-methylpropene October 16

Isobutylene has a range of industrial uses. For example, it is used to produce isooctane, a fuel additive, by reacting with butane. It can also be polymerized to produce polyisobutylene, a type of synthetic rubber. Isobutylene is industrially produce

What are the ingredients of chalk October 16

What are the ingredients of chalk
Natural chalk has been used in its raw form by artists for as long as humans have been etching cave walls. Sometimes impurities are found in the chalk bed, which lend various colors to the c ...

What are types of chromatography October 12

Adsorption and partition chromatography are the oldest methods of chromatography. They work by adding a solution to the substance that causes a chemical reaction resulting in separation. Molecular exclusion chromatography work by passing the substanc

What are five isomers of C4H6 October 10

Some of these isomers, such as 1-butyne, 2-butyne, 1,2-butadiene and 1,3-butadiene, are linear isomers, while compounds such as cyclobutene and 1-methylcyclopropene are cyclic isomers. With four atoms of carbon in its structure, butyne is the first c

What is hypobromous acid October 9

Hypobromous acid is always in the form of a solution. The physical and chemical properties of this acid resemble those of another acid known as hypochlorous acid. Purdue University illustrates how the atoms bond by using a structural formula. An oxyg

Is hydrocyanic acid strong or weak October 9

Strong and weak acids are mainly distinguished by how likely the acid is to dissociate into its constituent ions when it is dissolved in water. Strong acids tend to ionize completely and split into a hydrogen ion (which combines with the water molecu

Would starch give a positive Fehling's test October 9

The Fehling's test is considered positive when the solution turns from blue to orange. To test the presence of starch chemically, iodine solution is used. If it turns from red to black or blue, the test is positive. For example, when drops of iodine
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