Calculate the concentration of hydronium ions in each solution.

-->17.9mL of 0.175mol/L HNO3 added to 35.4mL of 0.0160mol/L Ca(OH)2

Calculate the concentration of hydroxide ions in each solution.

-->16.5mL of 1.50mol/L H2SO4 added to 12.7mL of 5.50mol/L NaOH.

Thanks!