Question

In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?
• Zn + 2HCl → H2 + ZnCl2
• Li2CO3 → LiO + CO2
• CH4 + O2 → CO2 + 2H2O
• CO2 + H2O → CH2OH + O2

Answer 1

Zn + 2HCl → H2 + ZnCl2