CРОЧНООООООООООООО
ДАМ 50 Б
Вкажіть групу речовин, в якій є лише оксиди (0,5б):


N2O, H2O, CH4


ВaO, CO, PH3


CuO, SO2, P2O5


NH3, N2O5, CaO
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