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Double U - definition of Double U - Labor Law Talk Dictionary (686 words) |
 | W is the twenty-third letter of the modern Latin alphabet. |
| W was invented in the 7th century by Anglo-Saxon writers, it was originally a double V (which also represented U—hence its English name "Double U", because the /w/ sound was spelled "vv"). |
| "Double U" is the only English letter name with more than one syllable. |
| Chemical reaction (3084 words) |
| Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. |
| The enthalpy of a reaction is calculated using standard reaction enthalpies and the Hess' law of constant heat summation. |
| Reaction rates are related to the concentrations of substances involved in reactions, as quantified by the law of mass action. |
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