12/1/2006

Hi Class
you should all be working on your chapter 4 test. On monday chapter 4 homework set is due. Also begin reviewing for you midterm.

Redox Websites

Here are a few websites to help with redox reations
http://www.cas.astate.edu/draganjac/Redox.html
http://www.mpcfaculty.net/mark_bishop/Redox_balancing.htm

Homework

Practice Oxidation Numbers. Here is a tutorial site for you all. See you Thursday.

http://www.roomd113.com/AP%20%20Chemistry%20Topics.htm#Aqueous%20Stoichiometry%20&%20Predicting%20Reactions

11/2/2006

We will get practice on oxidation numbers. I looked at the book again, and it introduces some of the rules in the practice problems. I will prepare a handout, and we will practice on Monday.
Here is a tutorial that you can use to get practice.

10/27/2006

Hi class,
we will go over acids and bases on tuesday. I am also going to start testing your reading, as I know some of you aren't reading your books.

10/23/2006

Hi class,
On Wednesday, 10/25/2006, your worksheet will be due. Also start studying for your polyatomic ion test Friday:
You must know the following:
CN -1 Cyanide
PO4 -3 Phosphate
SO4 -2 Sulfate
OH -1 Hydroxide
NO3 -1 Nitrate
CO3 -2 Carbonate
NH4 +1 Ammonium
C2H3O2 -1 Acetate (also written CH2COO-)
MnO4 -1 Permaganate
ClO4 -1 Perchlorate
ClO3 -1 Chlorate
Remeber you should be working on your problem set as we go along in this chapter.

10/19/2006

You should begin working on your homework sets, up to question 17. ALos your thesis statements are due for those of your not doing symposium. Email to me at Pualeilehua@gmail.com

Chapter 4 homework set

YOUR HOMEWORK SET FOR CHAPTER 4 IS:

#15,17,21,23,29,31,35,39,41,47,49,51,53,55,59,61,67,69,71,73,79,81,83,85.

DUE DATEIS THE DATE YOUR NEXT TAKE EXAM FOR CHAPTER 4 IS DUE, WHICH WILL BE ANNOUNCED.

Take home exam 3 copy

Name:_____________________________
Take Home Exam
1. Balance the following reactions
1. I2O5 + CO ↔ I2 + CO2
2. NO2 + O3 ↔ N2O5 + O2
3. CS2 + CL2 ↔ CCL4 + S2Cl2
4. NaCl + H2SO4 ↔ Na2SO4 + HCl
5. WO3 + H2 ↔ W + H2O
6. CO2 + H2O ↔ C6H12O6 + O2
7. P4O10 + H2O ↔ H3PO4
8. C5H12 ↔ C5H8 + H2
9. As2O3 + C ↔ CO2 + As
10. Al2O3 ↔ Al + O2
2. N2 (g) + 3H2 ↔ 2 NH3
1. How many moles of NH3 can be produced from 5.25 mol of N2?
2. How many moles of N2 will react with .7 moles of H2?
3. 9.0 moles of NH3 can be produced from how many moles of N2?

3. CaC2 (g) + 2 H2O (l) ↔ C2H2 (g) + Ca(OH)2 (s)
1. Calculate the formula mass for each chemical in the reaction.
2. 62.4 g CaC2 reacts with excess water to yield how many grams of Ca(OH)2?
3. 62.4 g CaC2 reacts with excess water to yield how many liters of C2H2?
4. How many ml of water is consumed in the above reaction? (the density of water

is .98 g/ml for this problem)

4. Fe2O3 (s) + 3 C (s) ↔ 2 Fe (s) + 3 CO (g)
1. 92.7 g Fe2O3 reacts with 16 g C. Identify the limiting reactant and give the theoretical
yield (in moles) of each product.
2. 215.6 g Fe2O3 reacts with 94.7 g C. Identify the limiting reactant and calculate the
theoretical yield of CO in liters.
3. If the percent yield of CO is 85.2% calculate the actual yield of CO (in liters) from #2.
4. If 82.7 liters CO of were actually recovered in problem #2 calculate the percent yield.

Test help

Hi class,
Here is some test help
Question 3-3.
The density of ethyne also known as acetylene is 0.001097 grams per mL.

Question 3-4.
The density of water is .98 mg/ml. This value is shown at the end of question 4. You do not need it for question 4.

Question 4-3
Density of CO is 1.145 grams per liter

Question 4-4 should read:
If 82.7 liters of CO were actually recovered in problem #2 calculate the percent yield.

Hope this helps you all.

10/4/2006 homework

Remember your homework sets, and take home exam are due on Wednesday 10/11/2006, and your lab on 10/6/2006.

Don't forget

Lab reports due on 10/12/2006. Also bring completed homework for Chapter 3 to class for disussion as well as worksheet. We will review for the test which will the following week, 10/16/2006.

Chapter 3 problems were:
Set #1{11, 12,13, 14, 19, 20, 21, 22}
Set #2{ }
Set #3{49, 50, 59, 60, 63, 64, 71, 72, 77, 78}

9/19/2006

Your homework is to read pages 79-89, do problems 11,12,13,14,19,20,21,22.

9/15/2006

If you are doing symposium, remeber first draft is due on Thursday, no later than Friday.
Read ahead into Chapter 3.
You all worked hard on your tests. Have a great weekend.

Homework 9/11/2006

Work on nomenclature dry lab.

All doing symposium need to see me.

Homework

No new homework. Nomenclature homework and extra credit problems due on Monday 9/11/2006.

Also 10 points extra credit for looking up oxyanions on the net and creating a table that shows when to use the per and hypo prefixes, ie. what elements have more than 2 oxyanions.

9/5/2006

Hello Class,
I know nomenclature is very frustrating. Please rest assured that I will not move to the next topic until you are ALL more comfortable with the topic. I will not collect this homework or the extra credit until you are all comfortable with your attempt.
The extra credit again was 60, 62, 64, 66, 70, 73, 89, and 92 from page 74-76.
You are to read pages 53-68.
On Thursday I will provide another handout and we will again discuss nomenclature, along with any exceptions to the rules. I will give you more practice on the material.

Thank you for your patience

Homework 8/30/2006

Hi class,
Your homework is Chapter 2 #48,49,51,56,57,59,61,63 and 72 for extra credit

Have a great weekend

Homework 8/28/2006

Your homework tonight is Chapter 2 problems #17,20,24,36,42,43, due 8/30/2006. Your lab reports will also be due on 8/30/2006.

8/24/2006 Period 1

Everyone worked diligently on your exams today, I am very proud,
Tonights homework is to read pages 37-52 in your books. See you all on Monday.

Homework (Period 1A)

Hello class!!!

Your homework, which will be due on 8/15/2006 was to do problems 1.44, 1.46, 1.48, 1.50, and 1.54.

We will review significant digits and conversions on 8/15/2006, and begin reviewing for the firts test.

Homework 8/9/2006

Welcome Connie and Daniel to our school.

Your homework assignment is to read section 1.6 and so problems 35,37,38,39,41 and 42. This is due on Friday.

Homework for 8/7/2006

Hi students,
Today's homework was to read section 1.4 and 1.5 in your textbooks, and do problems 23,24,25,26,27,29 . This is due on Wednesday 8/9/2006.
Remember to review your notes daily and write key phrases into your review column.
See you Wednesday.