Discuss on internal energy and enthalpy?

For the above reaction what is the internal energy change, DeltaU ?

Can you find an example of decrease in internal energy at constant temperature?

For N_(2) + 3H_(2) rarr 2NH_(3) , enthalpy and internal energy changes respectively are, Delta H " & " Delta U then

How much will be the internal energy change in isothermal process

On which of the following factors does internal energy depend upon

Assertion(A ): Absolute values of internal energy cannot be determined Reason (R ): It is impossible to determine the exact values of constituent energies of the substances

If water vapour is assumed to be a perfect gas, molar enthalpy change for vapouration of 1 mole of water at 1 bar and 100^(@)C is 41 kJ mol^(-1) . Calculate the internal energy change when a) 1 mol of water is vapourised at 1 bar and 100^(@)C b) 1 mol of water liquid is converted into ice.