9. Solving a chemistry problem

83. The normality of the H2SO4 solution was established by calcium carbonate containing 91.9% CaCO3 without admixture of other bases. 29.87 cm3 of acid was added to a sample of 0.6724 g and its excess was titrated with 10.27 cm3 of NaOH solution (1 cm3 of H2SO4 is equivalent to 1.024 cm3 of NaOH). Calculate the normality of the sulfuric acid solution and the sodium hydroxide solution.