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The Law of Multiple Proportions
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What is the approximate mass of a neon-11 atom?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, atomic mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
Jj Thomson's atomic theory?
what is atom
Why is the approximated atomic mass of an atom with 16 neutrons 15 protons and 15 electrons 31 Daltons?
The atomic mass is determined by the contents of the [atomic] nucleus - the sum of the protons and neutrons; in this case the atomic mass {also called the atomic weight} is 31. A dalton is the mass of a hydrogen atom, or ion: that is, a proton.
Whose investigation on properties of gases led him to propose an atomic theory of matter?
his observations led him to believe that gases are made of individual particles are very similar to the idia of the atom proposedby democritus
Where did Neils Bohr propose his postulations on atomic theory?
Niels Bohr proposed his postulations on atomic theory in Copenhagen, Denmark in the early 20th century. His ideas became known as the Bohr model of the atom, which helped explain the behavior of electrons in atoms.
Why scientists accepted daltons atomic theory but not the idea of an atom proposed by the Greek philosopher?
the Greek Philosophers did not test their theory.
What was Benjamin Franklin's contribution to atomic theory?
Benjamin Franklin made several contributions to various scientific fields. In atomic theory, he was the first to propose how to measure the size of an atom.
The weight in daltons of one atom of an element is?
equal to the atomic mass of the element expressed in daltons. It is essentially the mass of one mole of the element in grams.
How is the modern atomic theory different from Daltons atomic theory?
In Dalton's theory the electrons in the atom travel in a one layered orbital rotation around the nucleus, in the modern, or electron cloud, theory the electrons travel in a more radical patterned movement while still staying in their respected energy levels.
The fundamental particle of a chemical element according to Daltons theory is?
The atom. Considered by Dalton to be indivisible and indestructible.
How did thompsons experiment change daltons atomic model?
thomas discovered that the atom contained smaller particals called electrons
Why was daltons model of the atom changed after Thompson experiment?
John Dalton's atomic theory indicated that atoms were indivisible spheres. When JJ Thomson did his work with cathode ray tubes, he discovered that atoms contain electrons, which meant that the atom is not indivisible, that there are smaller particles within
What is the approximate mass of a neon-11 atom?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, atomic mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
Jj Thomson's atomic theory?
what is atom
Why is the approximated atomic mass of an atom with 16 neutrons 15 protons and 15 electrons 31 Daltons?
The atomic mass is determined by the contents of the [atomic] nucleus - the sum of the protons and neutrons; in this case the atomic mass {also called the atomic weight} is 31. A dalton is the mass of a hydrogen atom, or ion: that is, a proton.
Who was the first greek philosipher who discovered an atom?
The first Greek philosopher to propose the concept of an atom was Democritus. He believed that all matter is composed of tiny, indivisible particles called atoms. Democritus's ideas laid the foundation for the development of modern atomic theory.
What was James chadwicks atomic theory?
the neutron atom
