A 31.00 mL sample of an H2SO4 solution of unknown concentration is titrated with a 0.1372 M KOH solution. A volume of 41.22 mL of KOH was required to reach the equivalence point. What is the concentration of the unknown H2SO4 solution?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98