1. Monday March 9
Objective: Calculate the grams of the ingredients of a peanut brittle recipe
Checkpoint:
How many moles in 3.2 grams of CO?
How many molecules in 12.3 grams of O2?
How much does 3.24 x 1024 molecules of H2 weigh (in grams)?
Homework:
Peanut brittle calculations due (Wed/Thurs)

2. 1 mole CO = g
How many moles in 3.2 grams of CO?
3.2 g 1
mol
0.11 mol x =
28.01 g

3. Grams  Moles  Molecules
How many molecules in 12.3 grams of O2?
12.3 g 1
mol
6.02 x 1023
molecules x x
32.00 g 1
mol
x 1023 molecules
2.31 x 1023 molecules

4. Grams  Moles  Molecules
How much does 3.24 x 1024 molecules of H2 weigh (in grams)?
3.24 x 1024 molec 1
mol
2.02 g x x
molec
6.02 x 1023 1
mol
10.87 grams
10.9 grams

5. Thought of the Week

7. Class Competition Points
2 Liter soda bottles
Friday class points as usual.
1 extra bonus point for 2 empty 2 L soda bottles
2 extra bonus points for 4 bottles
3 extra bonus points for 6 bottles
4 extra bonus points for 8 bottles
5 extra bonus points for 10 bottles

8. Turn in Copper Hydrate Lab
26.27 moles of H2O
8.34 moles of CuSO4
/ = 3.15
3 H2O : 1 CuSO4

9. Sugar + 5 Water + Baking Soda + 2 Corn Syrup + 2 Butter + 2 peanuts
Sugar + 5 Water + Baking Soda Corn Syrup Butter peanuts  Peanut Brittle
Wed / Thurs
Please bring $1 to help with materials

10. Sugar + 5 Water + Baking Soda + 2 Corn Syrup + 2 Butter + 2 peanuts  Peanut Brittle
.606 mol
get here
mol
3.12 mol
Start here

11. Mole Conversions Quiz #7) Convert 0.832 grams of CO2 into molecules
Show all your work.
Label the units on your answer.
Molar mass units = g/mol
Round to 2 decimal places (  12.23) or correct number of significant figures
If calculator says 4.23e24, write it as 4.23 x 1024