alleryStart learning →The law of definite proportions is also known as the law of:
AMultiple proportions
BConservation of mass
CCombining volumes
DConstant composition
Answer & Solution
Correct answer: D. Constant composition
1. A given compound always contains its elements in the same proportion by mass.
2. That statement is known as the law of definite proportions or the law of constant composition.
3. The law of multiple proportions is a different rule about two elements forming several compounds.
4. Conservation of mass concerns totals before and after a reaction.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 2 'Atoms, Molecules, and Ions', sections 2.1-2.6_
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