Convert scruple (apothecary) [s.ap] to Atomic mass unit [u] Online | Free weight-and-mass Converter

Scruple (Apothecary) [s.ap]

The scruple is a small unit of mass used in the apothecary system, historically important in pharmacy for measuring medicinal ingredients.

One scruple equals 20 grains, or about 1.296 grams. It is also 1/3 of an apothecary dram and 1/24 of an apothecary ounce.

Though largely obsolete today, the scruple helped ensure precise measurement of drugs and compounds in traditional medicine.

Summary:

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  1 scruple = 20 grains ≈ 1.296 grams

  
  
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  Used in apothecary (pharmacy) system

  
  
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  Important for accurate measurement of medicinal ingredients

  
  

Atomic Mass Unit [u]

The atomic mass unit (u), also known as the unified atomic mass unit or dalton (Da), is a standard unit of mass used to express atomic and molecular weights.

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  1 u = 1/12 the mass of a carbon-12 atom

  
  
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  1 u ≈ 1.66053906660 × 10⁻²⁷ kilograms

  
  
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  Symbol: u or Da

  
  

Key Facts:

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  Used to measure the mass of atoms, molecules, and subatomic particles

  
  
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  1 hydrogen atom ≈ 1 u

  
  
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  Mass of a proton ≈ 1.007 u, neutron ≈ 1.008 u

  
  
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  Simplifies comparison of atomic-scale masses in chemistry and physics

  
  

The atomic mass unit provides a convenient and consistent way to express and compare very small masses at the atomic and molecular scale.