Question

Which equation demonstrates the law of mass conservation?(1 point)
Responses

H2 + Cl2 → 2HCl
H 2 + Cl 2 → 2HCl

H2 + O2 → 2H2O
H 2 + O 2 → 2H 2 O

H2 + Cl2 → HCl
H 2 + Cl 2 → HCl

H2 + O2 → H2O

Answer 1

The equation that demonstrates the law of mass conservation is:

**H2 + Cl2 → 2HCl**

This equation shows that the number of atoms for each element on the reactant side (left) is equal to the number of atoms for each element on the product side (right), thereby illustrating the principle that mass is conserved in a chemical reaction.