I and III because when wearer boil the kinetic energy atoms move faster and the particles break apart which means the space increases instead of decreasing
The answer is atomic weight !
3 MgCl₂ + 1 Na₃P = 1 Mg₃P₂ + 6 NaCl<span>
Mg</span>₃Cl₂ = <span>Magnesium Phosphide
</span>
NaCl = Sodium <span>chloride
hope this helps!</span>
