Molecular Physics | Thermodynamics Answers

Two identical gas containers A and B contains the masses of molecules mA = 3.34×10-27 kg and mB = 5.34×10-26 kg,
respectively. Both gases are under the same pressure and are at 10.0°C.
a) Compare the translational kinetic energy per molecule of molecules A, B and root-mean-square (rms) speeds of
them?
b) In order have both gases with the same rms speed, we need to raise the temperature of only one of these
containers. Which gas should be raised the temperature?
c) At what temperature will you accomplish your goal?

A diver observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the
surface (where the pressure is 1.00 atm). The temperature at the bottom is 4.0°C, and the temperature at the surface is
19.0C° higher. Find the ratio of the volume of the bubble as it reaches the surface to its volume at the bottom? Does
the bubble expand or compress in volume? Assume that the number of moles of gas in the bubble remains constant.

A container holding 0.25 kg of water at 20.0c is placed into the freezer. How much energy must be removed from the water to turn into ice?

Liq O2 at 50k is heated to 300k at const pressure 1 atm. Rate of heating is constant. Represent variation of temperature with time.?

The tennis ball has a mass of 5.7 X 10^-2 kg and has an initial speed of 2.0 m/s. Calculate the speed of the ball when it hits the ground. Ignore air resistance.

A system of particles occupying single-particle levels and obeying Maxwell-Boltzmann statistics is in thermal contact with a heat reservoir at temperature, T. If the population distribution in the non-degenerate energy levels with energies 21.5×10^-3eV, 12.9×10^-3eV and 4.3×10^-3 are 8.5%, 23% and 63% respectively. What is the average temperature of the system?

A Toy cart with a mass of 12 kg is traveling right at a 5 m/s . What is the momentum of the cart

Name one condition that causes air with water vapour to rise to reach the dew point temperature when it condenses into clouds

The moment that air cannot hold any more evaporated water molecules and the water vapour begins to condense onto dust or salt nuclei to form water droplets is called

If a valve is opened to let out enough air to bring the pressure back down to its original value, what percentage of the molecules escape?