Answer: 100C of heat is needed.
Explanation: That is the heating point of water
I believe it would be the first option. It forms iron oxide (rust) when exposed to moisture and air.
Answer:
tha mass of magnesium nitrate is 592g
Explanation:
from a balanced chemical equation
2HNO3 + Mg(OH)2→ Mg(NO3)2 + 2H2O
2 mol of nitric acid is equivalent to 1 mol of magnesium nitrate. then 8 mol of nitric acid will be equivalent to 4 mol of magnesium nitrate.