Use following chemical equation for the remaining questions: 2LiBr + I2 → 2LiI + Br2
** answers should be in correct number of significant digits for 2a and 2b**
2a. 174 g LiBr is equal to how many moles of LiBr?
1 mol
1.00 mol
2.00 mol
2 mol

2b. If 812 g LiBr is added to the reaction, how many liters of Br2 will be produced?
22.40 L
52.3 L
52.27 L
22.4 L

Honors Only
2c. If 22 g LiBr produces 41 g LiI and 35 g I2 produces 45 g LiI, which reactant is the limiting reactant?
LiBr
I2
LiI
Br2

An uncovered pot of water lies out in the sun. which statements correctly describe what happens at the surface of the liquid water? 1. the vapor pressure remains constant regardless of the water temperature. 2. the vapor pressure is produced by water molecules that have evaporated. 3. the vapor pressure increases as the sun heats the water in the pot. 4. evaporation stops once the vapor pressure reaches a certain point. 5. evaporation and condensation both occur on the liquid’s surface.