4a) Calculate the molar concentration of a solution containing 120g of NaOH per dm3.
b)Calculate the molar concentration of a solution containing 5.00g of NaOH in 250cm3.
c)Calculate the mass of NaOH dissolved in 25.0cm3 of a solution of concentraion 5mol dm-3.
5) HCl(aq) + NaOH(aq) -->...
