91Ó°ÊÓ

Calculate the density in grams per liter of the following gases at STP. (a) \(\mathrm{NH}_{3}\) (b) \(\mathrm{N}_{2}\) (c) \(\mathrm{N}_{2} \mathrm{O}\)

Calculate the density in grams per liter of the following gases at STP. (a) NO (b) \(\mathrm{NO}_{2}\) (c) \(\mathrm{O}_{2}\)

What is Dalton's law of partial pressures?

How is Dalton's law of partial pressures used to determine the pressure and moles of a sample of gas that is collected over water?

A sample of oxygen gas saturated with water vapor at \(22^{\circ} \mathrm{C}\) exerts a total pressure of 728 torr. What is the partial pressure of oxygen in the flask? The vapor pressure of water at \(22^{\circ} \mathrm{C}\) is \(20.0\) torr.

A total of \(0.400 \mathrm{~L}\) of hydrogen gas is collected over water at \({ }^{18}{ }^{\circ} \mathrm{C}\). The total pressure is 742 torr. If the vapor pressure of water at \(18^{\circ} \mathrm{C}\) is \(15.5\) torr, what is the partial pressure of hydrogen?

A tank contains \(78.0 \mathrm{~g}\) of \(\mathrm{N}_{2}\) and \(42.0 \mathrm{~g}\) of \(\mathrm{Ne}\) at a total pressure of \(3.75 \mathrm{~atm}\) and a temperature of \(50.0^{\circ} \mathrm{C}\). Calculate the following quantities. (a) moles of \(\mathrm{N}_{2}\) (c) partial pressure of \(\mathrm{N}_{2}\) (b) moles of \(\mathrm{Ne}\) (d) partial pressure of \(\mathrm{Ne}\)

A tank contains \(150.0 \mathrm{~g}\) of \(\mathrm{CO}_{2}\) and \(24.0 \mathrm{~g}\) of \(\mathrm{O}_{2}\) at a total pressure of \(4.25 \mathrm{~atm}\) and a temperature of \(25.0^{\circ} \mathrm{C}\). Calculate the following quantities. (a) moles of \(\mathrm{CO}_{2}\) (b) moles of \(\mathrm{O}_{2}\) (c) partial pressure of \(\mathrm{CO}_{2}\) (d) partial pressure of \(\mathrm{O}_{2}\)

State the five postulates of the kinetic-molecular theory.

How is kinetic energy related to gas pressure?