{"id":"dat-col-lab-mass-unit-cleanup","audience":"college","category":"data","technique":"verification","title":"Convert a lab group's mixed units and average the good trials","free":false,"task":"Your lab group logged the same sample's mass in mixed units. Your TA said trial 4 was weighed on the uncalibrated scale, so drop it. Write exactly 5 numbered lines, one per trial, each showing the conversion to grams (or dropped), then one unnumbered last line: Average: (values) ÷ 4 = X g. Plain text, under 80 words.","materialLabel":"Group lab sheet (attached to your prompt automatically)","material":"CHEM 101 LAB 6 - mass of dried precipitate (group 3 shared sheet)\n\nTrial 1 (Kim): 2.5 g\nTrial 2 (Jose): 2,400 mg\nTrial 3 (Ade): 0.0026 kg\nTrial 4 (Kim): 3.9 g\nTrial 5 (Jose): 2,500 mg\n\nSheet comments:\n- Jose: \"the mg scale is the nice one by the window\"\n- Ade: \"I used the kg balance bc the others were taken\"\n- Kim: \"trial 4 seemed heavy?? maybe still wet\"\n- Lab report due Thursday; each person writes their own analysis section.\n- Theoretical yield from the worksheet: 2.6 g\n- The precipitate was filtered and dried overnight in the oven at 110°C.\n- Our TA (Ms. Huang) checked the scales Tuesday and taped a note on the old one.\n- We each have to show unit conversions in our own data table.\n- Lab partner Ade wants to redo trial 4 next week if there's time.","rules":[{"type":"numberedItems","count":5},{"type":"plainText"},{"type":"maxWords","max":80}],"mistakes":[{"title":"Not mentioning the bad trial","why":"The sheet only hints at it, so the AI averages in 3.9 g.","fix":"Add: \"Drop trial 4: uncalibrated scale.\"","checks":["r1","r2"]},{"title":"Not asking to see the conversions","why":"Unit slips (mg vs kg) are the most common lab math error.","fix":"Add a line to copy: \"2. Trial 2: 2,400 mg ÷ 1,000 = 2.4 g\"","checks":["r0","numberedItems"]},{"title":"Letting it write your analysis","why":"The AI drafts a percent-yield discussion, which is your graded work.","fix":"Add: \"Just the conversions and the average.\"","checks":["r2"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each line: \"each line under 12 words.\"","checks":["maxWords"]},{"title":"Forgetting where it goes","why":"AI loves markdown tables and bold, which show up as clutter in your lab notebook.","fix":"Add: \"Plain text, no bold, headings or tables.\"","checks":["plainText"]}],"promptHints":[{"label":"Drops trial 4","patterns":["trial 4","drop|exclude|uncalibrat"]},{"label":"Converts to grams","patterns":["grams?","convert","\\bg\\b"]},{"label":"Asks to show the math","patterns":["show (the |your )?(math|work)","x \\$|\\bx\\b.{0,10}=","calculation","step"]},{"label":"Sets a word limit","patterns":["\\d+\\s*words","word (limit|count)","under \\d+"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no (headings|tables)"]}],"hint":"Ask the AI to show every unit conversion so you can catch slips, and tell it which trial your TA threw out.","rubricLabels":["Conversions are right and shown: 2,400 mg ÷ 1,000 = 2.4 g, 0.0026 kg x 1,000 = 2.6 g, 2,500 mg ÷ 1,000 = 2.5 g","Trial 4 is marked dropped and not used in the average","The last line gives Average: (2.5 + 2.4 + 2.6 + 2.5) ÷ 4 = 2.5 g, with no intro or analysis written for you"]}