1. Who will win the titrating challenge?

2. Record your Calculations into the Excel sheet up front How would you find the Molarity using the class data Determine the molarity of NaOH using the class data How does it compare to the molarity you obtained? What error do you believe may have occurred in the lab?

3. 1 atm=760 mm Hg and 760 torr

4. What type of bonds exist in CaO? Electronegativities of elements Ca 1.0 O 3.5 A Ionic B Polar Covalent C Non Polar Covalent

5. What type of bonds exist in CH 4 ? Electronegativities: Carbon 2.5 Hydrogen 2.1 A. Ionic B. Polar Covalent C. Non Polar Covalent

6. What type of bonds exist in BF 3 ? Electronegativity of B=2.0, F=4.0 A. Ionic B. Polar Covalent C. Non Polar Covalent

7. You have 22.3 mL of Carbon dioxide gas at 22.0º C. What volume would the gas occupy at 37.0º C? (pressure stays constant) A.23.4 mL B.21.2 mL C.23.4 L D.32.1 L

8. If the barometric pressure is 740.0 mm Hg and the vapor pressure is 19.2 torr under the conditions in which hydrogen gas is collected (over water), what is the pressure of the hydrogen gas alone? A. 759.2 torr B 759. 2 mm Hg C 720.8 mm Hg D None of the above

9. If a mixture of nitrogen and oxygen gas contains 1.20 atm of nitrogen and 256 mm Hg of oxygen, what is the total pressure, in atmospheres, of this mixture? A 254.8 mm Hg B 257.2 mm Hg C 1.54 atm D 1.54 mm Hg

10. A sample of carbon dioxide is placed in a 1.00 L flask where it exerts a pressure of 67.5 mmHg. What is the pressure of this gas sample when it is transferred to a 25 mL flask? (temp. doesnt change) A. 2.70 X10 3 mm Hg B. 1.68 X10 3 mmg Hg C. 16.8 atm

11. Write the equation that describes how KOH reacts with HCl

12. A.300 mol sample of Argon gas has a volume of 9.00 L at a pressure of 875 mm Hg. What is the temperature of the gas in degrees C? A.202 degrees C B.147 degrees C C.232 degrees C D.0 degrees C E.None of the above

13. What are the strongest intermolecular forces present in CH 3 OH Electronegitivity of C=2.5, H= 2.1,O=3.5 A Dipole Dipole B Dispersion forces C Hydrogen bonding D Ionic

14. Draw the lewis dot structure for NH 3. and determine if the molecule polar or non polar? Electro negativity of N=3.0, Electro negativity of H=2.1 A. Polar B. Non Polar

15. Draw the Lewis structure for Cl 2 and determine if the molecule is polar or non polar Electro negativity of Cl is 3.0 A. Polar covalent B. Non polar covalent

16. Draw the Lewis structure for CN-

17. Draw the Electron Dot structure for SrCl 2

18. Calculate the volume of hydrogen gas produced at STP by reacting 5.00g Mg and an excess of HCl A 4.61 L B. 2.30 L C. 2.30 X 10 3 mL D. 46.1 X 10 2 mL