ANSWER ASAP

1. NH₄NO₂(s) → N₂(g) + H₂O(l)

1a. Write the number (if any) that should go in front of NH₄NO₂(s), N₂(g), and H₂O(l) in order with commas in between. If there shouldn't be a number, write "no number".

1b. What type of reaction is represented in this equation?

2. Cl₂(g) + KBr(aq) → KCl (aq) + Br₂(l)

2a. Write the number (if any) that should go in front of each compound in order with commas in between. If there shouldn't be a number, write "no number".
2b. What type of reaction is represented in this equation?

3. FeS(s) + HCl(aq) → H₂S(g) + FeCl₂ (aq)

3a. Write the number (if any) that should go in front of each compound in order with commas in between. If there shouldn't be a number, write "no number".

3b. What type of reaction is represented in this equation?