Complete the following table for this titration. Thanks for the help!

Complete the following table for this titration.
Data Table P1: Titration of acetic acid with calcium hydroxide

concentration of Ca(OH)2 = 0.341 M
volume vinegar solution 11.78 mL
mass vinegar solution 11.84 g
volume of Ca(OH)2 solution 12.28 mL
mmol of Ca(OH)2 ? mmol
mmol of HC2H3O2 ? mmol
mass of HC2H3O2 ? g
mass % of HC2H3O2 in the original sample ? %
molarity of HC2H3O2 in the original sample ? M

Ca(OH)2(aq) + 2 HC2H3O2(aq) ----------> Ca(C2H3O2)2(aq) + 2 H2O

a. ? mmol Ca(OH)2 = 0.341mmol Ca(OH)2/mL x 12.28 mL = 4.19 mmol Ca(OH)2
b. ? mmol HC2H3O2 = 4.19 mmol Ca(OH)2 x 2 mmol HC2H3O2 / mmol Ca(OH)2 = 8.37 mmol
c. ? g HC2H3O2 = 8.37 mmol x 60.0 mg HC2H3O2/ mmole = 502 mg HC2H3O2
d. ? M HC2H3O2 = 8.37 mmol HC2H3O2 / 11.78 mL = 0.711 M HC2H3O2
e % = 100% x 0.502 g / 11.78 g = 4.26% vinegar