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Phase transitions commonly refer to when a substance transforms between one of the four states of matter to another. At the phase transition point for a substance, for instance the boiling point, the two phases involved - liquid and vapor, have identical free energies and therefore are equally likely to exist.
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
4-Methylimidazole (4-MeI or 4-MEI) is a heterocyclic organic chemical compound with molecular formula H 3 C – C 3 H 3 N 2 or C 4 H 6 N 2. It is formally derived from imidazole through replacement of the hydrogen in position 4 by a methyl group. It is a slightly yellowish solid.
Julien Benda (French: [ʒyljɛ̃ bɛ̃da]; 26 December 1867 – 7 June 1956) was a French philosopher and novelist, known as an essayist and cultural critic. He is best known for his short book, La Trahison des Clercs from 1927 ( The Treason of the Intellectuals or The Betrayal by the Intellectuals ).
From ancient history to the modern day, the clitoris has been discredited, dismissed and deleted -- and women's pleasure has often been left out of the conversation entirely. Now, an underground art movement led by artist Sophia Wallace is emerging across the globe to challenge the lies, question the myths and rewrite the rules around sex and the female body.
US Agency for International Development staff around the world will be placed on administrative leave Friday and ordered to return to the US, according to a directive issued Tuesday night.
From January 2008 to December 2012, if you bought shares in companies when Steven A. Ballmer joined the board, and sold them when he left, you would have a -25.4 percent return on your investment, compared to a -2.8 percent return from the S&P 500.
TrES-4 orbits its primary star every 3.543 days and eclipses it when viewed from Earth.. A 2008 study concluded that the GSC 02620-00648 system (among others) is a binary star system allowing even more accurate determination of stellar and planetary parameters.