Question

Na2SO3” represents sodium sulfite.

What does the 4 mean in the formula 4Na2SO3?

There are four atoms of sodium.
There are four atoms of sodium sulfite.
There are four molecules of sodium sulfite.
There are four elements in sodium sulfite.

Answer 1

Answer:

there are 4 atoms of sodium.....

Answer 2

Answer:

there are four molecules of sodium sulfite.

Explanation:

Na2So3 is considered as a molecule , the number before Na2So3 is multiplying it ...

As a result we have 4 molecules of Na2So3.