Molecular Physics | Thermodynamics Answers

A beaker has 100 g of water. The amount of energy needed to raise the temperature of the water 5°C is approximately

When i cycled from home at a speed at 36km/h i reached the station 4mins after the train left.if i had cycled at 45km/h i would reach to the station 4min before the train left.how far is the station

A steel railroad track has a length of 21 m

when the temperature is 2◦C.

What is the increase in the length of the

rail on a hot day when the temperature is

40 ◦C? The linear expansion coefficient of

steel is 11 × 10−6

(

◦C)−1

.

Answer in units of m.

Find the total translational kinetic energy of

3 L of oxygen gas held at a temperature of

−3C◦ and a pressure of 2 atm.

Answer in units of J.

A 200.0 ml of a gas is collected at 20.0 0C and 733.5mm of Hg. The mass of the sample is 0.934g. What is its Molar mass?

4 molecules are to be distributed in 2 cells . Find possible number of macrostates and corresponding no.of microstates.

Give the assumptions of Debye model. Hence calculate (gammaD)^3 where gamma is Debye cut -off frequency.

What are classical limits? Explain how quantum distribution laws are reduced to classical Maxwell-Boltzmann distribution?

Obtain an expression for vibrational specific heat of constant volume for a diatomic volume.

A simple harmonic one dimensional oscillator has energy level is given by En=(n+{1÷2}h cross omega.where omega is angular frequency and h=0,1,2,3,.... .Suppose that this oscillator is in thermal contact with a heat reservior at tempararature T low enough so that kT<<hcross omega.Find the ratio of probability of oscillator being in first excited state to the probability of its being in the ground state.