July 2022 1 23 Report

. Необратимая химическая реакция произойдет при сливании растворов веществ, формулы которых:

1) NaNO3 и H2SO4                              3) CaCl2 и Na2CO3      

2) KCl и NaOH                                               4) CuSO4  и HCl

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