Ответы на вопрос:
m(H2SO4) = 54 g
m(соли) - ?
n(H2SO4) = 54 / 98 = 0.55 mol
0.55 mol x mol
2Al + 3H2SO4 = Al2(SO4)3 + 3H2
3 mol 1 mol
3:0.55 = 1:x
3x = 0.55
x = 0.18
m(Al2(SO4)3) = 0.18*342 = 61.56 g
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