Question

4. The compound iron sulfide can be formed by
filtering b. evaporating heating
a.filtering
C.heating
d. mixing

Answer 1

Answer:

When iron sulfide is exposed to oxygen it reacts rapidly, releasing large amounts of heat.

Explanation:

i took this from my notes- so whatever aligns with that. sorry if this didnt help but i think its genuinely c heating

Answer 2

I think the answer is c