To determine the mass of CO2 that forms from a given mass of CaCO3, which of the following must be known? Check all that apply.

To determine the mass of CO₂, the following must be known :

Reaction

Decomposition of CaCO₃

CaCO₃ ⇒ CaO + CO₂

Given the mass of  CaCO₃, so to determine the mass of CO₂ :

1. Find the mol of  CaCO₃ from the molar mass of  CaCO₃

2. Find the mole ratio of  CaCO₃ : CO₂(from equation = 1 : 1)

3. Find the mass of CO₂ from the molar mass of CO₂