1. Announcements Exam #2: Tuesday, Oct. 29th, 7:00-8:15pm
Exam locations are posted; review sessions will be posted tomorrow afternoon
Conflict exam 5:15-6:30pm, 103 Transportation Bldg, sign up outside 102 Chem Annex
Online HW 5 (Type II) due tomorrow by 7:00pm.
Lab This Week: Review Questions for Exam 2 (answers due online by Friday at 5:00pm)
Stoichiometry Workshop on Thursday
Must be present in lecture to get credit!

2. Clicker #1 6 mol H2 reacts with 4 mol O2
Limiting Mol Product Leftover Reactant
A) H mol 2 mol O2
B) H mol 1 mol O2
C) O mol 2 mol H2
D) O mol 4 mol H2
E) Neither mol None

3. Clicker #2 12 mol H2 reacts with 5 mol O2
Limiting Mol Product Leftover Reactant
A) H mol 1 mol O2
B) H mol 7 mol O2
C) O mol 7 mol H2
D) O mol 2 mol H2
E) Neither mol None

4. Clicker #3 16.128 g H2 reacts with 96.00 g O2
Limiting Mol Product Leftover Reactant
A) H mol 1 mol O2
B) H mol 1 mol O2
C) O mol 2 mol H2
D) O mol 2 mol H2
E) Neither mol None

6. Example #1 2H2(g) + O2(g)  2H2O(g)
To react 10.0 g of hydrogen gas, what volume of oxygen gas would you need at 1.05 atm and 22°C?
2H2(g) + O2(g)  2H2O(g)

7. Example #2 Given 3.00 g of Mg, how much 3.00 M HCl do we need (in mL)?
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

8. Example #3
Which case makes the larger balloon (at the same temperature and pressure)?
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
Case #1: 10.0 g Mg with 586 mL of 3.00 M HCl
Case #2: 15.0 g Mg with 274 mL of 3.00 M HCl

9. Example #4 Consider the reaction:
(NH4)2CO3(s)  2NH3(g) + CO2(g) + H2O(g)
What total volume of gas is produced, measured at 453oC and 1.04 atm, if 52.0 g of ammonium carbonate is heated?