What is meant by the law of conservation of mass? If 12 g of C is burn

1.	What is meant by the law of conservation of mass? If 12 g of C is burnt in the presence of O2 , how much CO2 will be formed? [Atomic mass of C = 12 u, O = 16 u]
Answer» Law of conservation of mass: This law states that “atoms are neither created nor destroyed in a chemical reaction”. This means that the total mass of the products formed in chemical reaction must be equal to the mass of reactants consumed. Carbon + oxygen → CO₂ Mass of carbon = 12g Mass of oxygen = 32g Mass of CO₂ =? According to the law of conservation of mass, Sum of masses of reactants = Sum of masses of of products Hence, 12g + 32g = 44g Thus, the amount of CO₂ formed is 44g.

What is meant by the law of conservation of mass? If 12 g of C is burnt in the presence of O2 , how much CO2 will be formed? [Atomic mass of C = 12 u, O = 16 u]

Answer»

Law of conservation of mass: This law states that “atoms are neither created nor destroyed in a chemical reaction”.

This means that the total mass of the products formed in chemical reaction must be equal to the mass of reactants consumed.

Carbon + oxygen → CO₂

Mass of carbon = 12g

Mass of oxygen = 32g

Mass of CO₂ =?

According to the law of conservation of mass,

Sum of masses of reactants = Sum of masses of of products

Hence, 12g + 32g = 44g

Thus, the amount of CO₂ formed is 44g.