12. Base your answer to the following question on the information below:
Sample
Pressure Temperature
Gas A 2 moles
760 mm.
Gas B 1 mole
380 mn.
Gas C 1 mole
760 mm.
Gas D 2 moles
760 mm.
Which gas occupies the smallest volume?
A) A B) B C) C D) D

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.

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