M
merry_tta


cho 3,76 g hh A gom S, FeS,FeS2 vao dd HNO3 du thu dc 0,48 mol NO2 va dd B. Cho B tac dung voi dd Ba(OH)2 thu dc ket tua C. Nung C den klg khong doi dc m gam chat ran
Gia tri cua m la]
A.17,545
B 15,145
C.12,815
D.11,650
bai nay cung khong kho lam.qtrong la phuong phap giai.
De nghi cac ban de xuat cak giai nhanh.
>-
neu co the, mong cac ban post nhieu bai ve dag muoi suaiua kim loai moi nguoi cung lam
Ban nao ranh vao toi thu 6 khaong 9h30' co the gap minh theo Ym merry_tta. minh can trao doi ve kinh nghiem hoc tap.on thi DH.
rat vui neu dc lam quen. ban nao hoc lop 11 ma nam sau dinh thi KTQD thi cang tot!^^.mong tin cac ban!
>-
Gia tri cua m la]
A.17,545
B 15,145
C.12,815
D.11,650
bai nay cung khong kho lam.qtrong la phuong phap giai.
De nghi cac ban de xuat cak giai nhanh.
neu co the, mong cac ban post nhieu bai ve dag muoi suaiua kim loai moi nguoi cung lam
Ban nao ranh vao toi thu 6 khaong 9h30' co the gap minh theo Ym merry_tta. minh can trao doi ve kinh nghiem hoc tap.on thi DH.