La presion de vapor del agua pura a 20°c es 17,535mmhg. Cual es la presion de vapor de 100g de una solucion acuosa de urea, co(nh2) 2 al 20%. Calcular el descenso relativo de la presion de vapor

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

Once similarity and one difference between a mixture of elements and a mixture of compounds

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?