How can I determine the concentration of HCl remaining in the flask after back titration?

Question

PLEASE SHOW SOLUTION!!!!!!

Con. of HCl: 0.14M
Volume added:100mL
Con. of NaOH:0.145M
Weight of Tablet: 1.0g
I have been given weight of antacid, concentration and volume of HCl and concentration of NaOH. I've done 3 trials and found the average volume of NaOH.

Answer 1

I've answered this question twice. Instead of posting a generic question (at least partly generic) why don't you include the volume of NaOH used in the back titration. That way we can talk reality instead of do this/ do that.