Question

a balanced chemical equation is an equation which shows that the total mass is conserved during a chemical reaction. Which of the following chemical equation agree with the statement. 1)Na+Cl2=NaCl 2)Na+H2O=NaOH+H2 3)C+O2=CO2 4)CaCO3=CaO+CO2.​

Answer 1

This is the answer. I hope it will help you!!!

Answer 2

c )C02

d)CaO + CO2

Step-by-step explanation:

the masses of the elements are conserved