Ответ:
Объяснение:
10) w(O) = 3*16/(2*56+3*16) *100% = 48/160*100%=30%
11)
2H2 + O2 = 2H2O
2K +2H2O = 2KOH + H2
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Ответ:
Объяснение:
10) w(O) = 3*16/(2*56+3*16) *100% = 48/160*100%=30%
11)
2H2 + O2 = 2H2O
2K +2H2O = 2KOH + H2