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<b>The Weekly Mix</b></div>
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Volume: Autumn 2025 | Edition: Week 13</div>
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<span style="font-family: Arial, sans-serif;">Schedule</span></h2>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Lucky Week 13 is up next! Remember that new experiments will start on Wednesdays now.</span></p>
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<span style="font-family: Arial, sans-serif;">Experimental Details</span></h2>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);">Review the window notes and any associated equipment guides for additional details. Please
<a href="https://lists.osu.edu/pipermail/preplabstudents/2025-November/000313.html" data-outlook-id="1db5c344-a01f-46a9-a20b-595dc997b85d" style="margin-top: 0px; margin-bottom: 0px;">
the Week 12 edition</a> for details on ECE, MGB, BLP, and HCAL.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>NAP</b></span></div>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">This is a new one that Sarah has been working on. Students will be working in pairs or groups of three. Equipment needed will be on
the bench beside hood A. We’ll be using vortex mixers, which are new to 1110. To activate the mixer, students just need to press their centrifuge tube down into the top cone. It will turn off when pressure is released. Waste is as expected, liquids and chemical
solids go in the white can, rinsed plastic tubes in the blue bucket.</span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>GAS</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Each TA will pick up a large bag containing Alka-Seltzer, antacids, and small empty bags. It’s ok for students to ask for an additional
package of Alka-Seltzer at the window for Part C. We’ve switched to generic Alka-Seltzer. Essentially, the white tablets are Alka-Seltzer and the colored tablets are antacid. Extra tubing for the gas collection apparatus will be available in the window. The
barometers in each room are near the thermostat (on the same wall as hood B). There are extra ring stands in each room between the ADA sink and Hood A.</span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>VOL</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">This one has A LOT of equipment and solutions. Students will be using the multimeter kits which are on the bench beside Hood A. If they
report that one is not working properly, please just swap the broken part for one of the replacements in the window.
</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(200, 38, 19); background-color: rgb(255, 255, 255);">Emma has made a guide on what to do with these. Please read it</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">.</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);"> </span></p>
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<span style="color: rgb(200, 38, 19);">The provided electrode kit is to be used for both Parts A and B.</span> One magnetic stir bar is provided in the kit to help distinguish between iron and zinc electrodes. The students will be sanding the oxidation layer
off the electrodes with emery paper/cloth. This should be done on the provided cover stock; the cover stock should be placed on the provided black plastic tray. The whole sanding procedure should be done under a snorkel. Each room has been provided with 7
trays since they only have 7 snorkels. We will not provide more. <span style="color: rgb(200, 38, 19);">
Students should not be sanding directly on the lab bench.</span> Doing this makes me sad :(</div>
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There’s a ton of waste for this experiment. Liquids should be discarded in the chemical waste beakers (white can). Contaminated paper, including spent emery paper, should go in the blue bucket. Spent electrodes should be collected in the canister in the window.
Spent porous cups and Pasteur pipets should be discarded in the orange bucket.</div>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>SAT</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">A carboy of saturated calcium hydroxide will be stirring on the bench beside Hood A. This should last all week, but MJ will have a backup
ready in the prep lab just to be safe. Students will be gravity filtering solution through P4 filter paper and a long stem funnel. This is 1910’s first titration lab, be prepared to hand out burets, pipets, and pipet pumps.</span></p>
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<span style="font-family: Arial, sans-serif;">Other Information</span></h2>
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<span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>Spring 2026 Schedule</b></span></p>
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<span style="background-color: rgb(255, 255, 255);"><b><br>
</b></span></div>
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</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">spring</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> 2026
</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">schedule</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> is
now available in Teams. Please look at the week of </span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">January</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> 5th.
Remember, </span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">shifts</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> must
be two hours (four blocks) long, and you cannot have more than 8 hours (16 blocks) scheduled in a single day. Everyone is required to schedule at least 12 hours per week; exceptions must be
</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">approved</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> my
Tyler in advance. Note that we only have one night lab, on Tuesday, but it will use
</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">both</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> floors. </span></p>
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<span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>Leaving the Prep Lab After this Semester?</b></span></p>
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</b></span></div>
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<span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">If you know you know you are, or are considering,
</span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">leaving</span><span style="font-family: Arial, sans-serif; font-size: 11.25pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> the
Prep Lab at the end of this semester, please let Tyler know ASAP. </span></p>
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<span style="color: rgb(102, 102, 102);">General Chemistry Prep Lab • Department of Chemistry and Biochemistry • THE Ohio State University<br>
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