How many grams of KClO3 can be dissolved in 100g of water at 70°C to form a saturated solution?

pure substance: iron,copper

impure substance: water,charcoal

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.