The principle of conservation of mass is true for reactions in both open and closed systems. This principle states that matter cannot be created or destroyed in a chemical reaction; instead, the total mass of reactants must equal the total mass of products. This holds true regardless of whether the system is open or closed, as long as the mass of the substances involved is accounted for.
When is the principle of conservation of mass true?
For reactions that involve solids, but not gases.
Only for reactions that take place in closed systems.
For reactions in both open and closed systems.
Only for reactions that take place in open systems.
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