In the beginning of class, we took the measurements of silver from the lab. (The lab was on Wednesday.) My data for the silver and the 100mL beaker was 51.27 grams. The mass for the silver alone was 0.15 grams. Next, we took another Stoichiometry quiz-- I hope everyone did really well!!
We also went over the homework from the night before. We had the partner take home quiz. The balanced equation for this was 2Fe2O3 + 6Cl2---> 4FeCl3 + 3O2. The answer to the first question was 7.50 moles of oxygen. The answer to the second question was 0.0376 moles of chlorine. The third question's answer was 255 grams of Iron (III) chloride. Finally, the answer to the fourth question was 8.75 grams of Iron (III) chloride.
Thursday, 10/17 Homework
1) Complete the Limiting Reactants worksheet (posted in the Unit 3 Handouts folder). I have not yet taught you an algorithm for doing limiting reactants problems, so this will be challenging for you! I want you to stick it out and see if you can "think through" how to do the problems logically. The problem that you solved together on Blogger was a limiting reactants problem; it may help you to review the thought process you followed as a class to solve that.
2) Many people will be out tomorrow (Friday the 18th). I will post a video going over the Limiting Reactants worksheet in detail by Friday afternoon, if not before. If you are not in class tomorrow, make sure you watch this video this weekend. Limiting Reactants are a big part of the test coming up (on WEDNESDAY THE 23rd), so you need to be able to solve these problems.
3) The Copper and Silver Nitrate lab write-up will be due on Monday the 21. I will post the format and questions for this write-up by Friday afternoon, if not before.
4) REMEMBER TO STUDY FOR THE UNIT 3 TEST ON WEDNESDAY THE 23!!!!!!
Our next blogger will be....Ambreen!!
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