{"id":347,"date":"2025-07-08T19:53:58","date_gmt":"2025-07-08T19:53:58","guid":{"rendered":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/?post_type=chapter&#038;p=347"},"modified":"2026-01-27T17:03:19","modified_gmt":"2026-01-27T17:03:19","slug":"procedure-6","status":"web-only","type":"chapter","link":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/chapter\/procedure-6\/","title":{"raw":"Laboratory Preparation &amp; Procedure","rendered":"Laboratory Preparation &amp; Procedure"},"content":{"raw":"<h2><strong>Materials:<\/strong><\/h2>\r\n<ul>\r\n \t<li>50 mL beaker<\/li>\r\n \t<li>250 mL beaker<\/li>\r\n \t<li>10- mL graduated cylinder<\/li>\r\n \t<li>25-mL graduated cylinder<\/li>\r\n \t<li>50-mL graduated cylinder<\/li>\r\n \t<li>100-mL graduated cylinder<\/li>\r\n \t<li>125 mL Erlenmeyer flask<\/li>\r\n \t<li>Funnel<\/li>\r\n \t<li>Analytical balance<\/li>\r\n \t<li>Water<\/li>\r\n<\/ul>\r\n<strong>Safety: <\/strong>\r\n\r\nBe aware of your surroundings, so you do not break the glassware you are using.\r\n<h2><strong>Procedure:<\/strong><\/h2>\r\nPart A - Volume Measurements\r\n<ol>\r\n \t<li>Inspect each graduated cylinder - the 10-mL, 25-mL, 50-mL, and 100-mL. Record the scale increments of each graduated cylinder in your data page. Be sure to keep these scale increments in mind as you record volumes of liquids throughout this lab.<\/li>\r\n \t<li>Using a 50-mL beaker, measure 10 - mL of water. Record the beaker's reading.<\/li>\r\n \t<li>Place a clean, dry funnel into a 10-mL graduated cylinder and carefully pour the water into a 10 - mL graduated cylinder. Record the volume to the correct precision of the device. If it overfills, measure the total volume in portions.<\/li>\r\n \t<li>Pour the water from step 3 into a 25 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 4 into a 50 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 5 into a 100 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Using a 50-mL beaker, measure 40 - mL of water. Record the beaker's reading.<\/li>\r\n \t<li>Pour the water from step 7 into a 100 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 8 into a 50 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 9 into a 25 - mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Using a 250-mL beaker, measure 100 - mL of water. Record the beaker's reading.<\/li>\r\n \t<li>Pour the water from step 11 into a 100 - mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 12 into a 50 - mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Using a 125-mL Erlenmeyer flask, measure 50-mL of water using a funnel. Record the flask's reading.<\/li>\r\n \t<li>Pour the water from step 14 into a 50-mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\r\n \t<li>Pour the water from step 15 into a 25-mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\r\n<\/ol>\r\nPart B - Mass Measurements\r\n<ol>\r\n \t<li>Zero the analytical balance.<\/li>\r\n \t<li>\u00a0Determine and record the mass of the 50-mL beaker. Be sure the beaker is completely dry.<\/li>\r\n \t<li>Repeat the process of determining the mass of the 50-mL beaker until you have a total of five mass measurements. Be sure to zero your balance between each mass measurement.<\/li>\r\n \t<li>Calculate the average &amp; standard deviation of your mass measurements. Record your average value on the board for class use.<\/li>\r\n \t<li>Record the class data set in your lab notebook and determine the average of the class data set.<\/li>\r\n<\/ol>","rendered":"<h2><strong>Materials:<\/strong><\/h2>\n<ul>\n<li>50 mL beaker<\/li>\n<li>250 mL beaker<\/li>\n<li>10- mL graduated cylinder<\/li>\n<li>25-mL graduated cylinder<\/li>\n<li>50-mL graduated cylinder<\/li>\n<li>100-mL graduated cylinder<\/li>\n<li>125 mL Erlenmeyer flask<\/li>\n<li>Funnel<\/li>\n<li>Analytical balance<\/li>\n<li>Water<\/li>\n<\/ul>\n<p><strong>Safety: <\/strong><\/p>\n<p>Be aware of your surroundings, so you do not break the glassware you are using.<\/p>\n<h2><strong>Procedure:<\/strong><\/h2>\n<p>Part A &#8211; Volume Measurements<\/p>\n<ol>\n<li>Inspect each graduated cylinder &#8211; the 10-mL, 25-mL, 50-mL, and 100-mL. Record the scale increments of each graduated cylinder in your data page. Be sure to keep these scale increments in mind as you record volumes of liquids throughout this lab.<\/li>\n<li>Using a 50-mL beaker, measure 10 &#8211; mL of water. Record the beaker&#8217;s reading.<\/li>\n<li>Place a clean, dry funnel into a 10-mL graduated cylinder and carefully pour the water into a 10 &#8211; mL graduated cylinder. Record the volume to the correct precision of the device. If it overfills, measure the total volume in portions.<\/li>\n<li>Pour the water from step 3 into a 25 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 4 into a 50 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 5 into a 100 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Using a 50-mL beaker, measure 40 &#8211; mL of water. Record the beaker&#8217;s reading.<\/li>\n<li>Pour the water from step 7 into a 100 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 8 into a 50 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 9 into a 25 &#8211; mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\n<li>Using a 250-mL beaker, measure 100 &#8211; mL of water. Record the beaker&#8217;s reading.<\/li>\n<li>Pour the water from step 11 into a 100 &#8211; mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 12 into a 50 &#8211; mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\n<li>Using a 125-mL Erlenmeyer flask, measure 50-mL of water using a funnel. Record the flask&#8217;s reading.<\/li>\n<li>Pour the water from step 14 into a 50-mL graduated cylinder using a funnel. Record the volume to the correct precision of the device.<\/li>\n<li>Pour the water from step 15 into a 25-mL graduated cylinder in portions using a funnel. Be sure to measure the total volume. Record the volume to the correct precision of the device.<\/li>\n<\/ol>\n<p>Part B &#8211; Mass Measurements<\/p>\n<ol>\n<li>Zero the analytical balance.<\/li>\n<li>\u00a0Determine and record the mass of the 50-mL beaker. Be sure the beaker is completely dry.<\/li>\n<li>Repeat the process of determining the mass of the 50-mL beaker until you have a total of five mass measurements. Be sure to zero your balance between each mass measurement.<\/li>\n<li>Calculate the average &amp; standard deviation of your mass measurements. Record your average value on the board for class use.<\/li>\n<li>Record the class data set in your lab notebook and determine the average of the class data set.<\/li>\n<\/ol>\n","protected":false},"author":125,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-347","chapter","type-chapter","status-web-only","hentry"],"part":343,"_links":{"self":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapters\/347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/wp\/v2\/users\/125"}],"version-history":[{"count":16,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapters\/347\/revisions"}],"predecessor-version":[{"id":991,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapters\/347\/revisions\/991"}],"part":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/parts\/343"}],"metadata":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapters\/347\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/wp\/v2\/media?parent=347"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/pressbooks\/v2\/chapter-type?post=347"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/wp\/v2\/contributor?post=347"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.hccfl.edu\/introchemlabmanual\/wp-json\/wp\/v2\/license?post=347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}