1. ch4 + 2o2 → 2co2 + 2h2o = balanced or unbalanced
2. sno2 + 2h2 → sn + h2o = balanced or unbalanced
3. 4al + 3o2 → 2al2o3 = balanced or unbalanced
4. n2 + 3h2 → nh3 = balanced or unbalanced
5. 2zn + 2hcl → zncl2 + h2 = balanced or unbalanced
6. 4fes + 7o2 → 2fe2o3 + 4so4 = balanced or unbalanced
7. 2 agi + na2s → 2ag2s + 2nai = balanced or unbalanced
8. ca3(po4) + 2h2so4 → 2 caso4 + ca(h2po4) 2 = balanced or unbalanced

1)unbalanced

2)Unbalanced

3)unbalanced

4)Unbalanced

5)Unbalanced

6)Unbalanced

7)Unbalanced

this might be wrong but i didnt see the same amount of certain elements on both sides

The correct answer is letter A.

Explanation: Because of the wide range of their trade, the phenomena develop several colonies in different parts of the Mediterranean Sea. These colonies were used to permanently access new commodities and new markets consumed by the products used by the phenomena. A most successful colony of phenomena was in the city of Carthage, which even rivaled the power of the Roman Empire a few centuries later.

The sheer volume and success of phenomenal commerce led these people to formulate the first alphabetic written form of human history. This alphabet, used to keep records of goods sold, appeared around 1100 BC and was bequeathed to the Greeks, which was added as vowels.