4.215 g a metallic carbonate was heated in a hard glass tube and CO_2 evolved was found to measure 1336 mL at 27°C and 700 mm pressure. What is the equivalent mass of the metal ?

4.215 g a metallic carbonate was heated in a hard glass tube and CO_2

1.	4.215 g a metallic carbonate was heated in a hard glass tube and CO_2 evolved was found to measure 1336 mL at 27°C and 700 mm pressure. What is the equivalent mass of the metal ?
Answer» SOLUTION :`("Mass of metal CARBONATE")/("Mass of metal OXIDE") = ("Eq. mass of metal + Eq. mass of" CO_(3)^(2-))/("Eq. mass of metal + Eq. mass of " O^(2-))` and Mass of metal oxide = Mass of metal carbonate - Mass of `CO_(2)`