How many atoms are in a mg sample which masses at 40.2 grams

the correct answer is a

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.

lol for the pointsss

you gotta add the following molecules so we can give u an answer

explanation: