Mercury reacts with bromine to produce mercuric bromide, HgBr2. When 250g of Br2 react with 250g d Hg. (a) Which of the two substances is in excess. (b) how many grams of product are formed. (c) what weight of the substance remained unreacted.

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

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 atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

i think the answer is terrae but not 100 percent sure. ▓▬▬ §