A gas mixture consists of `2.0` moles of oxygen and `4.0` moles of neon at temperature T. Neglecting all vibrational modes, calculate the total internal energy of the system.(Oxygen has two rotational modes.)

A gas mixture consists of 2 moles of oxygen and 4 of Argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

Two point charges 20 xx l0^-6C and -4 xx l0^-6C are separated by a distance of 50cm in air. Calculate the electrostatic potential energy of the system.

A mixture of 2 moles of carbon monoxide and one mole of oxygen in a closed vessel is ignited to get carbon dioxide. If Delta H is the enthalpy change and Delta E is the change in internal energy, then :-

Two moles of an ideal monatomic gas occupies a volume V at 27 °C. The gas expands adiabatically to a volume 2V. Calculate (i) the final temperature of the gas and (ii) change in its internal energy.

A vessel contains one mole of O_(2) gas ( molar mass 32 ) at a temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas ( molar mass 4 ) at a temperature 2T has a pressure of "________" .

A body of mass 2 kg travels with a velocity of 8 m//s makes a head on collision with another body having mass 4 kg, which is travelling in the same direction with a velocity of 1 m//s . Calculate the velocities of the two bodies after collision. Find the loss in kinetic energy of the system. (Given e = 0.5)

A long solenoid consisting of 1.5xx10^3 turns//m has an area of cross-section of 25 cm^2 . A coil C, consisting of 150 turns (N_c) is wound tightly around the centre of the solenoid. Calculate for a current of 3.0 A in the solenoid (a) the magnetic flux density at the centre of the solenoid, (b) the flux linkage in the coil C, (c) the average emf induced in coil C if the current in the solenoid is reversed in direction in a time of 0.5 s. (mu0=4pixx10^-7 T.m//A) .

Determine the electrostatic potential energy of a system consisting of two charges -2 muC and +4 muC (with no external field) placed at (-8 cm, 0, 0) and (+8 cm, 0, 0) respectively, (b) Suppose the same system of charges is now placed in an external electric field. E = A(1//r^2) , where A = 8 xx 105 cm^-2 , what would be the electrostatic potential energy of the configuration.

An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from 34 °C to 24 °C at a constant pressure of 1.0 atm is ( Use gamma_("air")=1.4 and universal gas constant=8.314 J/mol K)