How Avogadro's hypothesis used to deduce atomicity of elementary gases? Avogadro hypothesis states that equal volume of all gases under similar conditions of temperature and pressure contain equal number of molecules. ... For example oxygen molecule has two oxygen atoms. So, atomicity of O2 is 2.
Answer:
1)Around 450 B.C., the Greek philosopher Democritus introduced the idea of the atom.
2)All matter is made of atoms, Atoms are indivisible and indestructible.Compounds are formed by a combination of two or more different kinds of atoms, A chemical reaction is a rearrangement of atoms.
3)B
Explanation:
Answer:
The lowest temperature at which a substance melts
Explanation:
D
Isotopes have the same number of protons so they both have 17 and a different amount of neutrons which is why the mass number is different