180 daltons
2.989 × 10⁻²⁵ kgMass · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass
Particles & molecules
Bar length measures mass, not physical size. Both bars start at zero kilograms (kg). Pictures identify the objects only.
A little perspective
180 daltons is approximately equal to the mass of a glucose molecule.
Mass: 2.989 × 10⁻²⁵ kg; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass: 2.991 × 10⁻²⁵ kg; representative.
A one-nanometre scale model of a glucose molecule; orientation affects its span.
University of Utah — Cell size and scale
The marked mass is calibrated. Unmeasured illustration details are representative.
Measurement details
Compare 180 daltons with the mass of a glucose molecule. The notes below explain how each value was chosen.
Mass · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass · representative
A one-nanometre scale model of a glucose molecule; orientation affects its span.
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
Mass is distinct from weight: an object’s mass stays the same as gravity changes.
Change your perspective
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A little smaller. A little larger.