Answer to Question #279107 in General Chemistry for Amirparsa

Question

A mixture of CaCO3 and CaO weighing 0.693 g was heated to

produce gaseous CO2. After heating, the remaining solid weighed

0.508 g. Assuming all the CaCO3 broke down to CaO and CO2,

calculate the mass percent of CaCO3 in the original mixture.

Answer 1

Mass percent =43.4%