The correct answer is C) A substance changes color when heated, but changes back when cooled. Hope this helps.
I thinks it's true but I'm not sure
Answer:
D 12
Explanation:
Assume that you have one formula unit of Na₂H₃IO₆. Then, you have
2 atoms Na
3 atoms H
1 atom I
<u>6 atoms</u> <u>O</u>
12 atoms TOTAL
