PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The OP asked for a specific exothermic reaction (negative delta H), and IMO is a very good question
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com