How much heat is needed to vaporize 20.5 g water from the liquid to gas phase, given the heat of vaporization of water is
2260 J/g?

what are the two models

explanation:

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.

the answer would be b i believe