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BÀI TẬP TRẮC NGHIỆM HÓA ĐẠI CƯƠNG VÀ VÔ CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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Y<br />

X SO 2 Y H 2 SO 4<br />

(A) X là S; Y là SO 3 . (B) X là FeS 2 ; Y là SO 3 .<br />

(C) X là H 2 S; Y là SO 3 . (D<br />

Z<br />

(A) H 2 SO 4 .nSO 2 . (B) SO 2 .nSO 3 .<br />

(C) H 2 SO 4 .nSO 3 . (D) H 2 S.nSO 3 .<br />

9<br />

181

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