Answer: I think the alcohol molecules slip between the water molecules and take up that space, so you have less that you started with.
Explanation:
Answer:(3)
Explanation: 2Al+3H2SO4----->Al(2SO4)3+3H2
Bonds breaking and bonds making occurs. Bonds breakind is often endotherminc because they require energy to break the bonds and bond making releases energy so itis exothermic.