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21 April, 05:56

Which of the following are clues that a chemical reaction may have taken place?

A. Temperature remains constant

B. Release of heat

C. Formation of a solid

D. Mass increase

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Answers (2)
  1. 21 April, 06:10
    0
    The answer is formation of a solid and release of heat (APEX)
  2. 21 April, 06:40
    0
    its d: mass increase
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