Who will win the titrating challenge?

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?

1 atm=760 mm Hg and 760 torr

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

What type of bonds exist in CH4?Electronegativities: Carbon 2.5 Hydrogen 2.1

A. Ionic

B. Polar Covalent

C. Non Polar Covalent

What type of bonds exist in BF3?Electronegativity of B=2.0, F=4.0

A. Ionic

B. Polar Covalent

C. Non Polar Covalent

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

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 torrB 759. 2 mm HgC 720.8 mm HgD None of the above

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

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. doesn’t change)

A. 2.70 X10 3 mm Hg

B. 1.68 X10 3 mmg Hg

C. 16.8 atm

Write the equation that describes how KOH reacts with HCl

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

What are the strongest intermolecular forces present in CH3OHElectronegitivity of C=2.5, H= 2.1,O=3.5

A Dipole Dipole

B Dispersion forces

C Hydrogen bonding

D Ionic

Draw the lewis dot structure for NH3.

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

Draw the Lewis structure for Cl2 and determine if the molecule is polar or non polarElectro negativity of Cl is 3.0

A. Polar covalent

B. Non polar covalent

Draw the Lewis structure for CN-

Draw the Electron Dot structure for SrCl2

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 103 mL

D. 46.1 X 10 2 mL