dpegosite1611 dpegosite1611

18-12-2018
Geography

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What happens to the mass of substances during a chemical reaction? A Mass is lost. B Mass is gained. C Mass is not gained or lost. D Mass is both gained and lost.

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breadjuice9 breadjuice9

18-12-2018

its (d) i know that for a fact because i am smart? i am a fifth grader !!!!!!!1

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