Question

what is the sorce of SO3?​

Answer 1

$\huge\underline{\underline{\mathfrak \red{Answer}}}$

❍It turns out that the sulfur is also oxidized in burning coal, forming sulfur dioxide (SO2).

❍Aided by dust or ultraviolet light, sulfur dioxide in the atmosphere reacts further with oxygen to form sulfur trioxide (SO3).

Answer 2

❍It turns out that the sulfur is also oxidized in burning coal, forming sulfur dioxide (SO2).

❍Aided by dust or ultraviolet light, sulfur dioxide in the atmosphere reacts further with oxygen to form sulfur trioxide (SO3).

$thanking \: uh$