An antacid tablet contains CaCO3 as the
active ingredient. When 2.318 grams of the tablet is dissolved in
6.456 mL of a 2.927 M HCl solution, it must
then back titrated with 8.383 mL of a
0.041 M NaOH solution. Calculate
the moles of HCl that reacted with
the CaCO3 in the tablet. Put
your answer in 3 significant figures.