Question

Which equation illustrates the principle of conservation of mass? (1 point)

H2SO4 + Zn → 4ZnSO + H2

C+O2→C2O

Mg + SMgS2

2H2+O2→2H2O

Answer 1

The equation that illustrates the principle of conservation of mass is:

**2H2 + O2 → 2H2O**

This equation shows that the number of atoms of each element on the reactant side (left) is equal to the number of atoms of each element on the product side (right), thus conserving mass.