Ответ:
дано
m(AL) = 306 g
H2SO4
----------------
m(AL2(SO4)3)-?
2Al+3H2SO4-->Al2(SO4)3+3H2
M(AL) = 27 g/mol
n(AL) = m/M = 306 / 27 = 11.33 mol
2n(AL) = n(Al2(SO4)3
n(AL2(SO4)3) = 11.33 / 2 = 5.665 mol
M(AL2(SO4)3) = 342 g/mol
m(Al2(SO4)3) = n*M = 5.665 * 342 = 1937.43 g
ответ 1937.43 г
Объяснение: