1 amu is equal to:
Correct answer: D. 1.66 x 10^-27 kg
- A. 1.66 x 10^-24 kg
- B. 1.66 x 10^-19 kg
- C. 16.6 x 10^-24 kg
- D. 1.66 x 10^-27 kg
Explanation
1 atomic mass unit (amu) is defined as 1.66 × 10⁻²⁷ kilograms, which is approximately the mass of one proton or neutron. One amu is 1/12 of the mass of one Carbon-12 atom.It is equal to 1/NA=1 / 6.022×1023= 1.66×10−24g∴ 1u = 1.66 x 10-27 kg
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