Wed-2/9-Stoichiometry

1. Picked up two new worksheets (pg.33 &34) and a Chapter 8 Lab Test paper.







2. We went over the "Goody Copper Penny Factory" lab.

#1:


































# 2:


































3. We went over the Stoichiometry Quiz #5.





4 Al + 3 O 2 ----> 2 Al2O3


(you have 12.5 g of Al and 12.5 g of O2)





A)Identify the limiting reactant




















LIMITING REACTANT= ALUMINUM (23.6 grams)








B) What mass of the product can be made?


23.6 Grams of Al2O3 can be made.



4. We started the Chapter 8 lab test.

• weighed 2 grams CuCl2.
• mixed the CuCl2 with 25mL of water.
• weighed 4 iron nails: 2.57 grams (Fe)
• dropped 4 iron (Fe) nails into the solution.
• Observations (Day 1): The iron nails turned a rusty reddish color that resembles copper. The CuCl2 mixture didnt really change colors, and there was no fizzing or bubbling.

Homework:

Stoichiometry Quiz

Journal pg. 33 & 34