Предмет: Химия, автор: gorodnickagloria

Знайти массову частку оксигену у сполуці Al2(SO4)3
Допоможіть будь ласка!!​

Ответы

Автор ответа: Sveta0000s
1

маса 1 моля

М {Al₂(SO₄)₃} = 2*27 + 3*32 + 12*16 = 342 г/моль

Масова доля алюмінія в речовині

ω (Al) = 2*27/342 = 0,1579  (15,79%)

Масова доля сульфура:

ω (S) = 3*32/342= 0,2807 (28,07%)

масова доля оксигена:

ω (О) = 12*16/342 = 0,5614 (56,14%)

gorodnickagloria: Спасибо!!!
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