What would be the heat released when an aqueous solution containing `0.5 mol` if `HNO_(3)` is mixed with `0.3` mol of `OH^(-1)` (enthalpy of neutralisation is `-57.1 kJ`)

What should be the amount of heat released when an aqueous solution containing 0.5 mole of NHO_3 is mixed with 0.3 mole of OH^-1 ? (enthalpy of neutralisation is -57.1 kJ)

What would be the heat released when 0.6 mole of HNO_3 in solution is mixed with 0.4 mole of NaOH ?

What would be the heat released when 0.5 mole of HCl in solution is neutralised by 0.25 mole of KOH?

What would be the heat released when 0.5 mole of HCI is neutralised by 0.5 mole of NaOH in aqueous solution.