Thermodynamics ...

One mole of a monoatomic gas is heated at a constant pressure of $$1atm$$ from $$0K$$ to $$100K$$. If the gas constant $$R=8.32J{mol}^{-1}{K}^{-1}$$, the change in the internal energy of the gas is approximately

Ethyl chloride $$(C_{2}H_{5}Cl)$$ is prepared by:-

A gas is compressed at a constant pressure of 50 $$N/m^{ 2 }$$ from a volume of $$10m^{ 3 }$$ to a volume of $$4m^{ 3 }$$. Energy of 100 J is then added to the gas by heating. Its internal energy is

The enthaply change on freezing of $$1\ mol$$ of water at $$10^ {o}C$$ to ice at $$-10^ {o}C$$ is:

Which relationship is incorrect? (for reversible isothermal process)

The internal energy of an ideal gas increases when it 

The amount of heat required to raise the temperature of 1 mole diatomic gas by $$1^0C$$ a constant pressure is 60 cal. The amount of heat which goes as internal energy of the gas is nearly

A reaction is spontaneous at low temperature but non-spontaneous at high temperature. Which of the following is true for the reaction?

Energy required to dissociate, 16 g oxygen gas into free atom is x kJ. The heat of atomisation of oxygen is :-

In a thermodynamic process, pressure of a fixed mass of a gas is changed in such a manner that the gas molecules gives out 20 J of heat and 10 J of work is done on the gas. If the initial internal energy of the gas was 40 J, then the final internal energy will be