gram-molecular weight: meaning, definition, pronunciation and examples
LowTechnical/Scientific
Quick answer
What does “gram-molecular weight” mean?
The mass in grams of one mole of a substance, numerically equal to its molecular weight.
Audio
Pronunciation
Definition
Meaning and Definition
The mass in grams of one mole of a substance, numerically equal to its molecular weight.
A specific quantity used in chemistry to express the amount of a substance, allowing for direct conversion between mass and number of molecules in laboratory measurements.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage between British and American English. Both use the term in the same technical context.
Connotations
Slightly archaic in both varieties; suggests older textbooks or historical scientific literature.
Frequency
Extremely low frequency in contemporary usage in both regions, confined to specific historical or pedagogical contexts.
Grammar
How to Use “gram-molecular weight” in a Sentence
The gram-molecular weight of [SUBSTANCE] is [NUMBER] grams.To find the number of moles, divide the mass by the gram-molecular weight.Vocabulary
Collocations
Examples
Examples of “gram-molecular weight” in a Sentence
adjective
British English
- The gram-molecular weight concept is foundational.
- He referred to the gram-molecular weight value.
American English
- The gram-molecular weight calculation is straightforward.
- She checked the gram-molecular weight data.
Usage
Meaning in Context
Business
Not used.
Academic
Used only in historical chemistry contexts or when discussing the evolution of scientific terminology.
Everyday
Not used.
Technical
The primary domain, though now considered dated. May appear in older manuals, equations, or when contrasting historical and modern nomenclature.
Vocabulary
Synonyms of “gram-molecular weight”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “gram-molecular weight”
- Using it interchangeably with 'atomic weight' or 'formula weight' without specifying the substance is molecular.
- Forgetting that it must have units of grams (e.g., saying 'The gram-molecular weight is 18' instead of '18 grams').
FAQ
Frequently Asked Questions
No, it is largely a historical term. The modern, preferred term is 'molar mass'.
Molecular weight is a dimensionless number (the relative mass of a molecule). Gram-molecular weight is that same number, but with the unit 'grams' attached, representing the mass of one mole of that substance.
Technically, no. The term specifies 'molecular'. For ionic compounds, the analogous historical term is 'gram-formula weight'.
The terminology was streamlined. 'Molar mass' is a clearer, more general term that applies to all substances (atomic, molecular, ionic) and emphasizes the concept of the mole rather than the specific unit (gram).
The mass in grams of one mole of a substance, numerically equal to its molecular weight.
Gram-molecular weight is usually technical/scientific in register.
Gram-molecular weight: in British English it is pronounced /ˌɡræm məˈlek.jə.lə ˈweɪt/, and in American English it is pronounced /ˌɡræm məˈlek.jə.lɚ ˈweɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'Gram' tells you it's a weight in grams, 'molecular' tells you it's for a molecule. It's the weight of one mole of molecules, in grams.
Conceptual Metaphor
A BRIDGE or CONVERSION FACTOR between the invisible world of molecules (counted in moles) and the tangible world of mass (measured in grams).
Practice
Quiz
What is the most accurate modern synonym for 'gram-molecular weight'?