Question

Balance the following reactions
a. N2+O2----- N2O5
b. Zn + HNO3---- Zn(NO3)2+H2
c. Al +02- AL2O3
d. CaCO3 + HCI ----- cacl2,+H2O+CO2​

Answer 1

a) 2N2 + 5O2 → 2N2O5.

b) Zn + 2HNO3 → Zn(NO3)2 + H2.

c) 4Al + 3O2 → 2Al2O3.

d) CaCO3 + 2HCl → CaCl2 + H2O + CO2.