Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. the temp. and the pressure of ozone in the stratosphere are 250 K and 1.0*10^-3 atm. How many ozone molecules are present in 1.0 L of air under these conditions?
At STP, 0.280L of a gas weighs 0.400g. Calculate the molar mass of the gas.
Understanding how a real gas (eg. van der Waals gas) differs from an ideal gas. Interpreting the pressure-volume behaviour of gases.
In an industrial process, nitrogen has to be heated to 500K at constant volume. If it enters the system at 300 K and 100 atm, what pressure does it exert at its final working temperature? Treat it as a van der Waals gas. Assume the volume is 1 m^3 (where "^" means "to the exponent").
Understanding the properties of gases. Understanding partial pressure of a gas in a mixture, and how partial pressure relates to the mole fraction.
One mole of nitrogen and three moles of hydrogen are injected into a container of volume 10 dm^3 at 298 K. What are the partial pressures and the total pressure? (Note: "^" means "to the exponent".)
Understanding the ideal gas law. Using the ideal gas law to calculate work done as a result of a chemical reaction that generates a gas.
Calculate the work done when 50 g of iron dissolves in hydrochloric acid in (a) a closed vessel and (b) an open beaker. Hint: Use the ideal gas law and equations to determine amount of work done when a gas expands.
What is the density of N2O at STP?
Application of Charles's Law (one of the derived basic gas laws) to calculate volume at a different temperature.
A certain mass of calcium carbide, CaC2, reacts completely with water to produce 64.5 L of acetylene, C2H2, at 50 degrees C and 1 atm. If the same reactants react completely at 300 degrees C and 1 atm, what will be the volume of acetylene?
What is the pressure in a 10 L container that is at 27o C and which contains 3 mol of H2 gas and 8 mol of He gas?
Question: A metal tank of volume 75.5 L will burst if the pressure in it exceeds 50.0 atm. Will this pressure be exceeded by 82.0 moles of a gas in it at 25 degrees Celsius?