A \(0.4943-\mathrm{g}\) sample of \(\mathrm{CaCO}_{3}\) is dissolved in \(12
\mathrm{M} \mathrm{HCl}\) and the resulting solution is diluted to \(250.0
\mathrm{mL}\) in a volumetric flask.
a. How many moles of \(\mathrm{CaCO}_{3}\) are used (formula mass \(=100.1
\mathrm{g} / \mathrm{mol}\) )?_____\(moles\)
b. What is the molarity of the \(\mathrm{Ca}^{2+}\) in the \(250.0 \mathrm{mL}\)
of solution?____\(M\)
c. How many moles of \(\mathrm{Ca}^{2+}\) are in a 25.00 -mL aliquot of the
solution in \(1(\mathrm{b}) ?\) _____\(moles\)
