I believe it would be the first option. It forms iron oxide (rust) when exposed to moisture and air.
Answer:
alright that sounds like a recipe i gota try
<span>B) The crystals did not phosphoresce within the drawer but did expose the film</span>
Answer: 4 hydrogens
Explanation:
This is what the structure will look like C=C. Remember that it's important that all structures have a complete octet. As it looks right now each carbon is sharing 4 valence electrons so each needs 2 more bonds to hydrogen complete its octet.