Is the mass of a proton about one atomic mass unit?

Answer 1

By definition the unified atomic mass unit is equal to one-twelfth of the mass of the nucleus of a carbon-12 atom. The unified atomic mass unit replaced the atomic mass unit (chemical scale) and the atomic mass unit (physical scale), both having the symbol amu. The amu (physical scale) was one-sixteenth of the mass of an atom of oxygen-16. The amu (chemical scale) was one-sixteenth of the average mass of oxygen atoms as found in nature.

Protons and neutrons have masses that are very close to 1 amu.

Answer 2

Yes. A single proton is appeoximately 1 amu.
Notice the slight difference in the mass of the proton and neutron

Proton mass: 1.007275 amu
Neutron Mass: 1.008662 amu

In chemistry it is practical to round off to integer values. But it is that fraction of a percent that makes all the difference in nuclear physics though.

When nuclear reactions occur the mass or the products will differ from the mass of the reactants by a fraction of a percent or so. But each fraction of a percent equals to 10 to 100 million electron volts of energy by Einsteins famous formula E=mc^2.

That is why nuclear energy is so much more powerful per mass of fuel than chemical energy.

Answer 3

the respond is 4 - proton and neutron. a positron is the anti-remember equivalent particle to an electron, which has a similar mass yet a favorable charge extremely of a adverse one. even with the undeniable fact that all of us comprehend it exists, it many times has no function in our on a daily basis lives.

Answer 4

yes
The exact number is 1.0073