2. 200 I’m gassy. 800 600 400 1000 200 Let’s bond. 800 600 400 1000 200 Stoichiometry 800 600 400 1000 200 Energizer Bunny 800 600 400 1000 200 I have the solution! 800 600 400 1000

3. Column 1, 200 What volume will 2.50 mol of hydrogen (H 2 ) occupy at - 20.0 °C and 1.5 atm?

4. Column 1, 400 What volume would be occupied by 68.0 g of gaseous carbon dioxide, CO 2, at STP?

5. Column 1, 600 A sample of gas has a volume of 852 mL at 25°C and 2.0 atm. What Celsius temperature is necessary for the gas to have a volume and pressure of 945 mL and 1.3 atm?

6. Column 1, 800 A neon light bulb (cylinder shaped, with a volume of 0.0026 L) at 0.0 °C and 1 atm contains how many grams of gas?

7. Column1, 1000 A chemical reaction produced 0.240 L of argon gas, Ar, at STP. What was the mass (in grams) of the gas produced?

8. Column 2, 200 Explain the difference between an ionic and covalent bond (it terms of electrons).

9. Column 2, 400 In a triple covalent bond, two atoms share a total of how many electrons?

10. Column 2, 600 How many hydrogen atoms would need to combine with a nitrogen atom to form a stable compound?

11. Column 2, 800 Draw the polar substance water.

12. Column 2, 1000 Identify C 2 H 4 as ionic or covalent and draw its Lewis-dot structure.

13. Column 3, 200 Use the following balanced chemical equation to answer the following: B 2 Br 6 + 6HNO 3 → 2B(NO 3 ) 3 + 6HBr How many moles of HBr will be produced with 11 moles of HNO 3 ?

14. Column 3, 400 Use the following balanced chemical equation to answer the following: 4NH 3 + 5O 2 → 4NO + 6H 2 O How many moles of H 2 O will be produced with 15 moles of O 2 ?

15. Column 3, 600 Consider the balanced chemical reaction: 2Fe + 3 H 2 S0 4 → Fe 2 (SO 4 ) 3 + 3H 2 How many moles of Fe 2 (SO 4 ) 3 will be produced if we begin with 150 grams of iron?

16. Column 3, 800 Use the following balanced chemical equation to answer the following: B 2 Br 6 + 6HNO 3 → 2B(NO 3 ) 3 + 6HBr How many grams of B(NO 3 ) 3 will be produced with 21 moles of HNO 3 ?

17. Column 3, 1000 Use the following balanced chemical equation to answer the following: 4NH 3 + 5O 2 → 4NO + 6H 2 O How many grams of NH 3 are needed to produce 90 grams of water?

18. Column 4, 200 List three phase changes that are endothermic.

19. Column 4, 400 Breaking bonds is what kind of reaction?

20. Column 4, 600 C 5 H 12 + 8O 2  5CO 2 + 6H 2 O + 3510kJ How much energy is released if 80 g of pentane are combusted?

21. Column 4, 800 Mass of water100.0 g Initial water temp18.0 °C Mass of ethanol burned0.65 g Final water temp48.0 °C Calculate the amount of thermal energy (H) that is absorbed by the water. H = mcΔT c = 4.2 J/gc

22. Column 4, 1000 Calculate the molar heat of combustion (kJ/mol) based on the data above. C water = 4.2 J/gc ethanol (C 2 H 5 OH) Mass of water100.0 g Initial water temperature18.0 °C Mass of ethanol burned0.65 g Final water temperature48.0 °C

23. Column 5, 200 All solutions are classified as this type of mixture.

24. Column 5, 400 Explain 2 different ways that a saturated solution can be made unsaturated.

25. Column 5, 600 Calculate the molarity of 140 g of calcium bromide in 2.0 L of solution.

26. Column 5, 800 If 2.5 mL of 6 M HCl needs to be neutralized, how many liters of 0.90 M NaOH must be added?

27. Column 5, 1000 Predict the products if the following aqueous ionic solutions are combined: Silver (I) nitrate and sodium chloride.