mass unit

Noun

Meaning

a unit of measurement for mass

Hypernyms

Hyponyms

Examples

A given atom has an atomic mass approximately equal (within 1%) to its mass number times the atomic mass unit (for example the mass of a nitrogen-14 is roughly 14 u). Source: Internet

In fact, by unit conversion it is a simple matter of abstraction to realize that any traditional mass unit can theoretically be used to measure gravitational mass. Source: Internet

Since the atomic mass unit (amu) is defined as 1/12 of the mass of the 12 C atom, it follows that the molar mass of a substance, measured in grams per mole, is numerically equal to its mean atomic or molecular mass measured in amu. Source: Internet

The actual mass of an atom at rest is often expressed using the unified atomic mass unit (u), also called dalton (Da). Source: Internet

The unified atomic mass unit u was defined as: : Terminology The unified atomic mass unit and the dalton are different names for the same unit of measure. Source: Internet

This is also why the mass of a proton or neutron by itself is more than (and not equal to) 1 u. The atomic mass unit is not the unit of mass in the atomic units system, which is rather the electron rest mass (m e ). Source: Internet

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