Chemistry, 23.08.2021 14:00, journeewilliams735

/ Dẫn khí CO dư quan ống sứ đựng 34,2 gam hh X chứa Fe2O3 , Al2O3 , MgO đến khi pư hoàn toàn thu được chất rắn A. Hoà tan A trong dd NaOH dư thấy khối lượng chất rắn B thu được bằng 65,306% khối lượng A. Hoà tan B bằng dd HCl 1M vừa đủ cần x lit dd HCl, khí thoát ra ở đktc là 4,48 lit. Tính % khối lượng các chất trong X và thể tích dd HCl đã dùng.

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/ Dẫn khí CO dư quan ống sứ đựng 34,2 gam hh X chứa Fe2O3 , Al2O3 , MgO đến khi pư hoàn toàn thu đượ...

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