Im stuck on these few questions that seems to be getting me no where :

c HCl = 0.1812
c NaOH = 0.1511
volume of HCl added : 75
volume of NaOH added: 29.23,19.58,33.3
-Determine the number of mmoles of HCl that did not react with the anatacid.
- mmoles of HCl neutralized by the tablet?
- mmoles of H+ neutralized per gram of antacid(mmole/g)
- Average #mmoles of H+ neutralized per gram of anatacid

To answer these questions, we need to use the concept of molar ratios and stoichiometry.

1. Determine the number of mmoles of HCl that did not react with the antacid:
To calculate this, we need to know how much NaOH reacted with HCl. We know the concentration (c) and volume of NaOH added, so we can calculate the number of moles (mmoles) of NaOH added:
moles of NaOH = c NaOH * volume of NaOH added

Next, we need to calculate the number of moles (mmoles) of HCl that reacted with the NaOH. Since HCl and NaOH react in a 1:1 ratio, the molar ratio is 1:1. Therefore:
moles of HCl reacted = moles of NaOH added

Finally, to determine the number of mmoles of HCl that did not react with the antacid:
mmoles of HCl not reacted = moles of HCl initially added - moles of HCl reacted
However, we need to convert the initial concentration of HCl to moles:
moles of HCl initially added = c HCl * volume of HCl added

2. Determine the mmoles of HCl neutralized by the tablet:
To find the mmoles of HCl neutralized by the tablet, we need to know the difference in the amount of HCl initially added and the amount of HCl that did not react with the antacid. Using the formula from the previous step:
mmoles of HCl neutralized = moles of HCl initially added - moles of HCl not reacted

3. Determine the mmoles of H+ neutralized per gram of antacid (mmole/g):
To calculate this, we need to know the mass of the antacid. Once you have the mass of antacid, divide the number of moles of HCl neutralized by the tablet (from step 2) by the mass of the antacid:
mmole/g = mmoles of HCl neutralized / mass of antacid

4. Determine the average #mmoles of H+ neutralized per gram of antacid:
To find the average number of moles of H+ neutralized per gram of antacid, you need to have multiple data points. If you have multiple trials with different masses of antacid, calculate the mmole/g for each trial, and then find the average of those values.

Remember to use proper units and carry out the calculations accurately to get the correct answers.