Molecular Physics | Thermodynamics Answers

Question 01:
2.0g of Nitrogen gas is at 270C in a fixed volume. If 20% of its total internal energy is due to rotation what is the average velocity of nitrogen molecules?
What will be the temperature 2.0 g of Helium gas in a fixed volume if the average velocity of its molecules is 20 m/s ?
Plot schematic of Cv v/s T curve based for nitrogen and helium gas based on Kinetic theory.

Question 02:
200g of melting ice is introduced to a huge lake at 270C. Find the total entropy change of ice-lake system.
200g of melting ice is introduced to a huge lake at 0.20C. Find the total entropy change of ice-lake system.
Can you draw any conclusion based on result? (Hint: tends to reversible, irreversible etc)

A gamma ray with an energy of 3.40 × 10-14 joules strikes a photographic plate. We know that Planck's constant is 6.63 × 10-34 joule·seconds. What is the frequency of the photon?

A thermodynamic system consists of an ideal gas in a cylinder. The gas is compressed from 5.68 L to 2.96 L at a constant pressure of 7.5 × 104 Pa. What work is involved in this process?

Determine the amount of heat required to convert 20 gram of ice at -17°c to 20 gram water at 80°c

Vector A has a magnitude of 63 units and points due west, while vector B has the same magnitude and points due south. Find the magnitude and direction of A+B and A-B

Find the average translational kinetic energy per molecule if one mole of the gas is contained in a volume .00123 metrecube at a pressure 200000Nper metresquare

How much Ice @ 0°C must be mixed with 50.0g of water @ 75.0°C to give a final water temperature of 20°C?

2 moles of air when heated though 10 k expand by 1.66 x 10 power -3 under a constant pressure 10 power 5 newton per meter square. if cv = 20.81 jmole k then cp is

A ship sails 50 km due north and then sails 85 km, 45 degrees north east. How far is the ship from its starting point, and what is its exact location? Use the graphical method and analytical method

Determine the pressure in the 20 l vessel containing 0.05 kg of water in at 110 celsius