First slide

Kinetics of nuclear reactions or nuclear chemistry

Question

1 amu is equal to

Moderate

A

$1 .66 \times 10^{- 27} kg$
B

$6 .02 \times 10^{23} kg$
C

$1 kg$
D

$1 \times 10^{- 3} kg$

Solution

.The atomic mass (m_a or m) is the mass of an atom. Although the SI unit of mass is the kilogram (symbol: kg), atomic mass is often expressed in the non-SI unit atomic mass unit (amu) or unified mass (u) or dalton (symbol: Da), where 1 amu or 1 u or 1 Da is defined as ¹⁄₁₂ of the mass of a single carbon-12 atom, at rest.

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