Question

Define the atomic mass unit. ​

Answer 1

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A unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

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Answer 2

Explanation:

The dalton or unified atomic mass unit (SI symbols: Da or u) is a unit of mass widely used in physics and chemistry. It is defined precisely as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.[1][2] A mass of 1 Da is also referred to as the atomic mass constant and denoted by mu.

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