Ответ:
Al + O2 = Al2O3
m (Al) = 27
M (Al) = 27
M (Al2O3) = 98
m (Al2O3) - X
X = 98 г
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Ответ:
Al + O2 = Al2O3
m (Al) = 27
M (Al) = 27
M (Al2O3) = 98
m (Al2O3) - X
X = 98 г