Ligas metálicas são uniões de dois ou mais metais, podendo ainda incluir semimetais ou não metais, mas sempre com predominância dos
elementos metálicos. Considere as seguintes ligas: aço; bronze; ouro 14
quilates e latão e indique os elementos predominantes em cada uma delas.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Embryos of different species look very similar, which shows that the organisms share a ancestor.

What is the number of atoms in 3.54 mol s