Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q220060> ?p ?o }
Showing triples 1 to 41 of
41
with 100 triples per page.
- Q220060 subject Q7213730.
- Q220060 subject Q7214051.
- Q220060 subject Q8357618.
- Q220060 abstract "Hess's law of constant heat summation, also known as Hess's law (or Hess' law), is a relationship in physical chemistry named after Germain Hess, a Swiss-born Russian chemist and physician who published it in 1840. The law states that the total enthalpy change during the complete course of a chemical reaction is the same whether the reaction is made in one step or in several steps.Hess's law is now understood as an expression of the principle of conservation of energy, also expressed in the first law of thermodynamics, and the fact that the enthalpy of a chemical process is independent of the path taken from the initial to the final state (i.e. enthalpy is a state function). Reaction enthalpy changes can be determined by calorimetry for many reactions. The values are usually stated for processes with the same initial and final temperatures and pressures, although the conditions can vary during the reaction. Hess's law can be used to determine the overall energy required for a chemical reaction, when it can be divided into synthetic steps that are individually easier to characterize. This affords the compilation of standard enthalpies of formation, that may be used as a basis to design complex syntheses.".
- Q220060 thumbnail Hess_cycle.svg?width=300.
- Q220060 wikiPageExternalLink experiment_6.pdf.
- Q220060 wikiPageExternalLink Hess-1840.html.
- Q220060 wikiPageWikiLink Q11372.
- Q220060 wikiPageWikiLink Q11382.
- Q220060 wikiPageWikiLink Q11473.
- Q220060 wikiPageWikiLink Q115669.
- Q220060 wikiPageWikiLink Q159.
- Q220060 wikiPageWikiLink Q161064.
- Q220060 wikiPageWikiLink Q179380.
- Q220060 wikiPageWikiLink Q182527.
- Q220060 wikiPageWikiLink Q183410.
- Q220060 wikiPageWikiLink Q186487.
- Q220060 wikiPageWikiLink Q189520.
- Q220060 wikiPageWikiLink Q203522.
- Q220060 wikiPageWikiLink Q230937.
- Q220060 wikiPageWikiLink Q271580.
- Q220060 wikiPageWikiLink Q334631.
- Q220060 wikiPageWikiLink Q36534.
- Q220060 wikiPageWikiLink Q39.
- Q220060 wikiPageWikiLink Q39631.
- Q220060 wikiPageWikiLink Q4283776.
- Q220060 wikiPageWikiLink Q45003.
- Q220060 wikiPageWikiLink Q4944757.
- Q220060 wikiPageWikiLink Q593644.
- Q220060 wikiPageWikiLink Q634314.
- Q220060 wikiPageWikiLink Q685892.
- Q220060 wikiPageWikiLink Q7213730.
- Q220060 wikiPageWikiLink Q7214051.
- Q220060 wikiPageWikiLink Q721706.
- Q220060 wikiPageWikiLink Q81915.
- Q220060 wikiPageWikiLink Q8357618.
- Q220060 wikiPageWikiLink Q893909.
- Q220060 wikiPageWikiLink Q911664.
- Q220060 comment "Hess's law of constant heat summation, also known as Hess's law (or Hess' law), is a relationship in physical chemistry named after Germain Hess, a Swiss-born Russian chemist and physician who published it in 1840.".
- Q220060 label "Hess's law".
- Q220060 depiction Hess_cycle.svg.