1. Tuesday, January 19 th Right now: bring me any homework you have that needs to be checked off – this is your ONLY chance today to get your homework checked! Take out your review guide Today’s agenda Questions on review guide? Stoichiometry practice problems

2. Each person at your table needs a whiteboard, marker, and rag. You will also need a periodic table and a calculator If you find a dead marker, please THROW IT AWAY (don’t just put it back in the tub…)

3. Rules of the game For each question, one point will be awarded for a correct answer WITH WORK SHOWN AND CORRECT UNITS. If you are off task (doodling, on your phone, sleeping, etc) your team will lose a point The winning team will be given 1 extra credit point on their test Work together, ask questions, make sure you GET IT.

4. Question 1 Ammonium chloride and barium hydroxide react in a double replacement reaction. Write a balanced chemical equation

5. Question 2 Ammonium chloride and barium hydroxide react in a double replacement reaction. If 3 moles of ammonium chloride reacts with excess barium hydroxide, how many moles of barium chloride are formed?

6. Question 3 Ammonium chloride and barium hydroxide react in a double replacement reaction. If 4.5 grams of ammonium hydroxide are formed, how many moles of barium hydroxide were used?

7. Question 4 Ammonium chloride and barium hydroxide react in a double replacement reaction. If 6.82 grams of barium hydroxide are used up, how many grams of ammonium chloride are used up?

8. Question 5 Hexane (C 6 H 14 ) combusts. Write and balance the chemical equation.

9. Question 6 Hexane (C 6 H 14 ) combusts. 5.1 moles of hexane react with 8.3 moles of oxygen. What is the limiting reactant?

10. Question 7 Lithium and nitrogen react in a synthesis reaction. Write and balance the chemical equation.

11. Question 8 Lithium and nitrogen react in a synthesis reaction. Chemists use 3.5 x 10 23 atoms of Li and 3.8 grams of N 2. How many grams of Li 3 N can be made? What is the limiting reactant?

12. Question 9 Lithium and nitrogen react in a synthesis reaction. Chemists use 6.2 grams of Li and 8.4 grams of N 2. What is the limiting reactant? How many grams of Li 3 N can be made?

13. Question 10 Copper and silver (I) nitrate react in a single replacement reaction (Cu 2+ is part of the products). Write and balance the chemical equation.

14. Question 11 Copper and silver (I) nitrate react in a single replacement reaction (Cu 2+ is part of the products). Tina Test Tube has 25 grams of Copper and Freddie Flask has 88 grams of silver (I) nitrate. They perform the chemical reaction! Identify the limiting reactant and predict how many atoms of silver will be produced.

15. Question 12 Copper and silver (I) nitrate react in a single replacement reaction (Cu 2+ is part of the products). 6.3 grams of copper react with 35.2 grams of silver nitrate. How many grams of silver should be formed?

16. Question 13 Copper and silver (I) nitrate react in a single replacement reaction (Cu 2+ is part of the products). 6.3 grams of copper react with 35.2 grams of silver nitrate. In the lab, 19.5 grams of silver is recovered. Calculate the percent error.