August 2021 0 13 Report
3. Определите, какая из реакций в задаче выделяет тепло, а какая поглощает: 1. Тепло поглощается A. Ca2 + H2O = Ca (OH) 2 2. Выделяется тепло B.CH4 + 202 = CO2 + 2H2O
C.Ca (OH) 2 = CaO + H20
D. 2KMnO4 = KMnO4 + MnO2 + 02
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