molecular weight

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Introduction References & Edit History Quick Facts & Related Topics

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Illustration of molecules. (molecular, chemistry, science)

Why Is a Group of Molecules Called a Mole?

molecule model, element

Molecular Machines: Making for the Future

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Holi: Festival of Colors

airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

Bar graph of the United States Death Toll during major events. Infogram chart.

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An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

Camel at Khor Rori, Oman; mammal.

Do Camels Store Water in Their Humps?

A mug shot taken by the regional Colombia control agency in Medellin

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molecular weight: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	relative molecular mass • molecular mass

Topics

mole molecule radical biomolecule configuration conformation monomer macromolecule ion diatomic molecule

Key People

Stanislao Cannizzaro

Italian chemist

Amedeo Avogadro

Amedeo Avogadro

Italian physicist

Theodor H.E. Svedberg

Swedish chemist

August Wilhelm von Hofmann, oil painting by E. Hader, 1886

August Wilhelm von Hofmann

German chemist