In a chemical reaction, 12g of carbon reacts completely with 32g of oxygen to form carbon dioxide. If only 40g of carbon dioxide is collected, which of the following conclusions is correct on the basis of the law of conservation of mass?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) During the reaction carbon dioxide escaped, so the mass was not fully collected.
2. (B) Mass is always lost as energy, so the final mass decreases.
3. (C) The law of conservation of mass does not apply to gas formation.
4. (D) The reaction is incomplete because 4g of mass is unaccounted for.

Verified Answer

Option (A): During the reaction carbon dioxide escaped, so the mass was not fully collected.

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