Question

СРОЧНО!!!!!!!!!! Рішіть16!!!!

Answer 1

Ответ:

Mr(Al2(SO4)3) =27*2+32*3+64*3=343гр/моль

Answer 2

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%