A 0.7445 g sample containing only CaCO3 and Mg(OH)2 is titrated using 0.3004 M HNO3. If it takes 31.75 mL of HNO3 to reach the end point of the titration, what are the wt% of CaCO3 and Mg(OH)2 in the sample?
Equations:
CaCO3 + 2 HNO3 -> Ca(NO3)2 + H2CO3
M(OH)2 + 2 HNO3 -> Mg(NO3)2 + H2O