Nguyễn Anh Tuấn
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2023-06-03 21:29:35
Gọi nAl = a mol, nZn = b mol.
Ta có: 27a + 65b = 9,2 (*)
3a + 2b = 0,5 (**)
Giải (*), (**): a = b = 0,1 mol.
mAl = 0,1.27 = 2,7 gam
2023-06-03 21:29:03
kê
2023-06-03 21:25:53
khó thế
2023-05-29 17:43:48
ok
2023-05-29 17:43:39
ok
2023-05-29 17:43:32
ok