When 24 mol of methanol and 15 mol of oxygen combine in the combustion reaction, 2 ch3oh(g) + 3 o2(g) ? 2 co2(g) + 4 h2o(g) what is the excess reactant and how many moles of it remain at the end of the reaction?

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 major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary