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21 September, 15:12

When is the principle of conservation of mass true? A. Only for reactions that take place in open systems. B. Only for reactions that take place in closed systems. C. For reactions that involve solids, but not gases. D. For reactions in both open and closed systems.

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  1. 21 September, 15:19
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    When is the principle of conservation of mass true?

    B. Only for reactions that take place in closed systems.

    Hope this answers your question!
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