Answer:
12 g
Explanation:
Chemical equation:
MgCO₃ → MgO + CO₂
12g = 5.28g + 6.72 g
12 g = 12 g
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
MgCO₃ → MgO + CO₂
There are 12 g of magnesium carbonate on the left side, according to the law of conservation of mass on the right side there should be 12 g product. Thus, 6.72 g of CO₂ should be formed.
