Ответ:
Mr(Al2(SO4)3) =27*2+32*3+64*3=343гр/моль
Mr(Al2(SO4)3) = 2 •27 + 3 • 32 + 12 •16 = 342
w(Al) = 54 : 342 • 100 % = 16 %
w(S) = 96 : 342 • 100% = 28%
w(O) = 192 : 342 • 100% = 56%
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Ответ:
Mr(Al2(SO4)3) =27*2+32*3+64*3=343гр/моль
Mr(Al2(SO4)3) = 2 •27 + 3 • 32 + 12 •16 = 342
w(Al) = 54 : 342 • 100 % = 16 %
w(S) = 96 : 342 • 100% = 28%
w(O) = 192 : 342 • 100% = 56%