Question

classify the chemical equations as being balanced or not balanced.
2co + 2no → 2co₂ + n₂
6co₂ + 6h₂o → c₆h₁₂o₆ + o₂
h₂co₃ → h₂o + co₂
2cu + o₂ → cuo

Explanation:

Step1: Check first equation

On left - hand side, we have 2 C, 2 O, 2 N. On right - hand side, we have 2 C, 4 O, 2 N. Since O is balanced as 4 on both sides after multiplying by coefficients, this equation $2CO + 2NO=2CO_2+N_2$ is balanced.

Step2: Check second equation

On left - hand side, we have 6 C, 12 H, 18 O. On right - hand side, we have 6 C, 12 H, 8 O. Oxygen is not balanced, so $6CO_2 + 6H_2O=C_6H_{12}O_6+O_2$ is not balanced.

Step3: Check third equation

On left - hand side, we have 2 H, 1 C, 3 O. On right - hand side, we have 2 H, 1 C, 3 O. So $H_2CO_3=H_2O + CO_2$ is balanced.

Step4: Check fourth equation

On left - hand side, we have 2 Cu, 2 O. On right - hand side, we have 1 Cu, 1 O. So $2Cu+O_2 = CuO$ is not balanced.

Answer:

Balanced	Not Balanced