Question

Coal burns in air to form​

Answer 1

Explanation:

Coal is chemically complex fuel. Whenever it is burned, gases are given off and particles of ash, called "fly ash," are released. The sulfur in coal combines with oxygen to form sulfur dioxide, which can be a major source of air pollution if emitted in large enough quantities.

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Answer 2

Answer:

carbon dioxide

Explanation:

$o_{2} + c = co_{2}$