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the claim
Parts by weight denotes the mass ratio of a component to the total mixture mass.
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

Parts by weight denotes the mass ratio of a component to the total mixture mass, which is a standard definition of concentration in chemistry and materials science that requires no external citation.

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The analysis

The claim states a basic, definitional scientific term ('parts by weight' representing a mass ratio). Under Step 0, statements that are trivially true by definition or direct everyday/scientific observation are classified as common knowledge, requiring no citation.

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first checked04 Aug 2026
judged → COMMON KNOWLEDGE · 9504 Aug 2026
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