Ответ:
MnO2=(55+32)/4=21. 75
Zn(OH)2=(65+34)/2=49.5
H4P2O7=(4+62+112)/4=44.5
BaCl2=(137+71)/2=104
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Ответ:
MnO2=(55+32)/4=21. 75
Zn(OH)2=(65+34)/2=49.5
H4P2O7=(4+62+112)/4=44.5
BaCl2=(137+71)/2=104