`X(g) + 2Y(g) rarr 2Z(g) + 3A(g)` The change in enthalpy at `27^(@)C` is 79.5 kJ. The value of `Delta`U is

For the reaction, A (g) + 2B(g) rarr 2C(g) + 3D(g) the change of enthalpy at 27^@C is 19 kcal. The value of Delta E is:

For the reaction, A (g) + 2B(g) rarr 2C(g) + 3D(g) the change of enthalpy at 27^@C is 19 kcal. The value of Delta E is:

The value of enthalpy change (Delta H) for the reaction : C_(2)H_(5)OH(l) + 3O_(2)(g) rarr 2CO_(2)(g) + 3H_(2)O(l) at 27^(@)C is - 1366.5 kJ mol^(-1) . The value of internal energy change for the above reaction at the temperature will be :

The value of enthalpy change (DeltaH) for the reaction C_(2)H_(5)OH (l)+3O_(2) (g) rarr 2CO_(2) (g) +3H_(2)O (l) at 27^(@)C is -1366.5 kJ mol^(-1) . The value of internal energy change for the above reactio at this temperature will be

The enthalpy change (Delta H) for the reaction N_(2) (g) + 3 H_(2) (g) rarr 2 NH_(3) (g) is - 92.38 kJ at 298 K . The internal energy change Delta U at 298 K is