Question

Which of the following statements best explains the law of conservation of mass?

• A. 100 g of water is heated to give steam.

• B. A sample of $N_{2}$ gas is heated at constant pressure without any change in mass.

• C. 36 g of carbon combines with 32 g of oxygen to form 68 g of $Co_{2}$.
• D. 10 g of carbon is heated in vacuum without any change in mass.

Answer 1

Answer: (C)

36 g of carbon combines with 32 g of oxygen to form 68 g of $Co_{2}$.

Answer 2

: The amount of products formed is equal to the amount of the reactants reacted.