Question

2 which of the following represent the law of conservation of mass?

Explanation:

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. This means the number of each type of atom on the reactant side must equal the number on the product side.

• Option A: There are 3 black atoms and 1 white atom on the reactant side, but 2 black atoms and 1 white atom on the product side. The number of black atoms is not conserved.
• Option B: There are 3 white atoms and 2 black atoms on the reactant side, but 1 white atom and 3 black atoms on the product side. The number of both atom types is not conserved.
• Option C: There are 2 black atoms and 2 white atoms on the reactant side (1 molecule with 2 black and 1 white, and 1 white atom), but 4 black atoms and 2 white atoms on the product side (2 molecules with 2 black and 1 white each). The number of black atoms is not conserved.
• Option D:
• Reactant side: 2 molecules of black - black (total 4 black atoms) and 1 molecule of white - white (total 2 white atoms).
• Product side: 2 molecules of black - black - white (each molecule has 2 black and 1 white atom, so total 4 black atoms and 2 white atoms).
• The number of each type of atom (black and white) is the same on both sides.

Answer:

D.