Neon belongs to 2nd Period & 18th Group
30% should be the percentage of oxygen if the total mass of fe2o3 is 160.
Give the positional isomers of 2 halopropane
(CH3)2CH
answer:
is in file download it
They all look like there decaying and was left out or sat inside too long
Democritus *suggested* the existence of the atom, that everything was made up of tiny particles, but wasn't really able to get more specific than that. Dalton also theorized that everything was made up of indivisible particles, but went further basing his theory on actual scientific principles, such as the Law of Conservation of Mass and the Law of Constant Composition. He also said that atoms weren't created or destroyed in a chemical reaction, just rearranged. There's more to it than that, but basically, Dalton's theory was based more on science while Democritus' theory was too general to be useful in chemical situations.
