About: http://webisa.webdatacommons.org/237538245

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Calcium and magnesium cause nearby all the hardness of water and are the active agents in the formation of the greater part of scale formed in steam boilers and other vessels in which water is heated or evaporated.
http://www.w3.org/ns/prov#wasQuotedFrom	ku.edu