Grab binders calculators begin the Do Now 58
Grab binders & calculators & begin the Do Now 5/8 DO NOW 1. How many particles are found in 1 mole? 2. What are the units for Molar Mass? 3. Determine the Molar Mass for the following elements/compounds: a. Carbon (C) b. Zn. Cl 2 c. Na. Br 4. Out of the list of topics shown below, choose 3 that you understand the LEAST: (1)Identifying chemical reaction types, (2)law of conservation of mass, (3)counting atoms, (4)balancing reactions, (5)calculating molar mass *Get out “Lab 3. Synthesizing & Testing the Purity of Aspirin”
Lab 3: Synthesizing Aspirin Question: Are brand name commercial prescription drugs better than generic or homemade prescription drugs? Directions: 10 min… - Complete Day 2 Procedures for the lab - Begin Post-lab questions
Quiz 2 Review Time Directions 15 min Begin Quiz 2 Review 5 min Complete Exit Ticket 4
Exit Ticket 4 Directions: You have 5 minutes to complete the Exit Ticket to the best of your ability. You MAY NOT use notes, but you may use a Periodic Table. When finished submit to the class bucket and put up your binder.
Theoretical Yield C 7 H 6 O 3(s) + C 4 H 6 O 3(aq) C 9 H 8 O 4(s) + C 2 H 4 O 2(aq) How much did we start with? Molar Masses? Mole Ratio? Lets climb up & down the mole hill…
Percent Yield & Percent Error Percent Yield: How much product you obtained Percent yield = (actual yield ÷ theoretical yield) x 100% Percent Error: How accurate you were Percent error = | actual yield – theoretical yield | x 100 % theoretical yield
Conclusion Restate the purpose Explain your hypothesis (accepted or rejected? ) Results – use your results to answer the purpose! Unknown – what were some unexpected errors that occurred? If your percent yield was not 100%, then why? New – what can you change if you were to perform this lab again?
- Slides: 7