An industry has two identical cylinders, which are in the same conditions of temperature (27ºC) and pressure (1atm) and contain the same volume of gases, one being filled with helium gas and the other with neon gas, both pure. Considering that the cylinder with helium gas has 1.6 grams of this gas, according to Avogadro's hypothesis, the neon gas cylinder should contain, in grams, a mass of gas equal to:

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

може ли да зареждате повече информация, моля

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".