Question

Please explain the discovery of the atomic mass.
Like for example, we say that 3g of carbon reacts with 4g of oxygen to form 7g of carbon monoxide. That's fine, but how did we come to the conclusion that the atom of carbon is lighter than the atom of oxygen, they said REACTS with not heavier than!? Need help, thank you!

Answer 1

Answer:

Explanation:

An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu. An atom of sulfur-32 has a mass of 31.972 amu.