Question

In nuclear physics define atomic mass unit with example

Answer 1

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ATOMIC MASS UNIT.....An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus.

EXAMPLE.......A hydrogen-1 atom has a mass of 1.0078250322 u (1.0078250322 Da).

...By definition, a carbon-12 atom has a mass of 12 u (12 Da).

...A molecule of acetylsalicylic acid (Aspirin) has a mass of 180.16 u (180.16 Da).

...Titin, the largest known protein, has an atomic mass of 3–3.7 megadaltons (3000000 Da).[22]

....A conventional value for standard atomic weight of carbon is 12.011 u (12.011 Da). This is based on average of many samples from Earth's crust, atmosphere, and organic materials. See Isotopes of carbon.

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