Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction
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Ответ:
Ответ:
Explanation:
25.61 cm*1 Gm
100000000000 cm=2.561e-10 Gm