Germanium (Ge) has properties that are similar to silicon.
Answer:
nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid.
Educated Guess Here!
Since Br-80 does not exist, maybe that means Br-79 or Br-81 have very unequal abundances. For example, Br-79 may have 75% abundance whereas Br-81 may have 25% abundance.
They use fans and air conditioning in the summer because its hot, which means they use energy and in the winter, there is no need because its cold so less energy.
