Use the following description to answer questions 2 — 4;
show all calculations: A titration is done using 0.10 M NaOH in the buret and 15.0 mL of 0.14 M HCl in the Erlenmeyer flask. 2. How many moles of HCl are in the flask before the titration is started?
3. How many moles of HC1 are left in the flask after a total of 4.0 mL of the 0.10 M NaOH solution were added to the flask?
4. How many moles of HCl are left in the flask after a total of 12.0 mL, of the 0.10 M NaOH solution were added to the flask?