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Partial Pressure

Q. A mixture of 1.05 g H2 and 1.95 g He is placed in a 1.00-L container at 22°C. Calculate the partial pressure of each gas and the total pressure.

Solved • Nov 18, 2019

Ideal Gas Law Density

Q. 14. An unknown gas is found to have a density of 0.4283 g L^-1 at 33.25 degrees C and 204.86 mm Hg. What is the molar mass (in g mol^-1) of this gas? what is the identity of this gas?

Solved • Sep 26, 2019

Bond Energy

Q. What happens to the bond strength (i.e., the bond enthalpy) as the bond length decreases? (Adding bond strength to your table may help you answer this.)

Solved • Nov 18, 2019

Collecting Gas Over Water

Q. A 2.00-L sample of O2 (g) was collected over water at a total pressure of 745 torr and 21 °C. When the O2 (g) was dried (water vapor removed), the gas had a volume of 1.95 L at 21 °C and 745 torr. Calculate the vapor pressure of water at 21 °C.

Solved • Nov 18, 2019

Bond Energy

Q. Make a table that lists these three bonds and their bond lengths. Recall that good tables include units. Use a table of average bond energies and bond lengths.

Solved • Nov 18, 2019

Bond Energy

Q. Find a series of related bonds (like CN, CO, CF) but involving a change in atoms down a column. Create a table that lists these three bonds and their bond lengths.

Solved • Nov 18, 2019

Chemistry Gas Laws

Q. 10. A 0.125 L gas in a sealed container is under a pressure of 1.11 atm at 34.0 degrees C. The pressure is increased to 1.95 atm. What is the new temperature (in degrees C) of the gas?

Solved • Sep 26, 2019