Is change in H from the bond energies and enthalpies of formation equally accurate​

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

my dad did alot of meth and ace cheeks