{"id":137,"date":"2026-04-10T02:53:10","date_gmt":"2026-04-10T02:53:10","guid":{"rendered":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/chapter\/ch058-xhtml\/"},"modified":"2026-05-11T17:43:50","modified_gmt":"2026-05-11T17:43:50","slug":"exercise-5","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/chapter\/exercise-5\/","title":{"raw":"Exercise\u00a05","rendered":"Exercise\u00a05"},"content":{"raw":"<div id=\"exercise-5\" class=\"level1\">\r\n<div data-custom-style=\"First Paragraph\">\r\n\r\nLab analysis and noble gas modeling reveal tritium activity of 0.72\u00a0TU and [latex]_{}^{3}{He_{trit}}[\/latex](<em>t<\/em>)<em>\u00a0<\/em>= 6.8 TU for a groundwater sample collected from a short\u2011screened well in 2019.\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\nWhat is the [latex]\\frac{_{}^{3}H}{_{}^{3}{He}}[\/latex] tracer age of this groundwater?\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\n<a href=\"\/age-dating-young-groundwater\/chapter\/solution-exercise-5\/\"><span data-custom-style=\"Hyperlink\">Solution to Exercise 5<\/span><\/a>\u2ba7\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\n<a href=\"\/age-dating-young-groundwater\/chapter\/4-2-basic-concepts-and-systematics\/\"><span data-custom-style=\"Hyperlink\"><u>Return to where text linked to Exercise\u00a05<\/u><\/span><\/a>\u2ba5\r\n\r\n<\/div>\r\n<\/div>","rendered":"<div id=\"exercise-5\" class=\"level1\">\n<div data-custom-style=\"First Paragraph\">\n<p>Lab analysis and noble gas modeling reveal tritium activity of 0.72\u00a0TU and [latex]_{}^{3}{He_{trit}}[\/latex](<em>t<\/em>)<em>\u00a0<\/em>= 6.8 TU for a groundwater sample collected from a short\u2011screened well in 2019.<\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p>What is the [latex]\\frac{_{}^{3}H}{_{}^{3}{He}}[\/latex] tracer age of this groundwater?<\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p><a href=\"\/age-dating-young-groundwater\/chapter\/solution-exercise-5\/\"><span data-custom-style=\"Hyperlink\">Solution to Exercise 5<\/span><\/a>\u2ba7<\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p><a href=\"\/age-dating-young-groundwater\/chapter\/4-2-basic-concepts-and-systematics\/\"><span data-custom-style=\"Hyperlink\"><u>Return to where text linked to Exercise\u00a05<\/u><\/span><\/a>\u2ba5<\/p>\n<\/div>\n<\/div>\n","protected":false},"author":7,"menu_order":40,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-137","chapter","type-chapter","status-publish","hentry"],"part":39,"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapters\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":3,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapters\/137\/revisions"}],"predecessor-version":[{"id":362,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapters\/137\/revisions\/362"}],"part":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/parts\/39"}],"metadata":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapters\/137\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/wp\/v2\/media?parent=137"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/pressbooks\/v2\/chapter-type?post=137"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/wp\/v2\/contributor?post=137"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/age-dating-young-groundwater\/wp-json\/wp\/v2\/license?post=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}