Đáp án+Giải thích các bước giải:
`Al_2(SO_4)_3`
Phân tử khối:
`M=2.M_{Al}+3.(M_S+4.M_O)`
`=2.27+3.(32+4.16)`
`=342` g/mol
Sửa thành $Al_{2}(SO_4)_3$
`Al=27, S=32. O=16 `
$M=M_{Al} .2+(M_{S} +M_{O} .4).3$
`M=27.2+(32+16.4).3`
$M=342(g/mol)$
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giúp mình mấy bài nhanh nhất cho ctlhn
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Cho hình vẽ: a song song với b Tính
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Giup minh tu cau26 đen câu 33 Ạ, tks
Help me vs ak + Giải thích nữa ak
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