/ 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.

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.

What volume of 0.500 mol/l hydrochloric acid, hci (aq) is required to react completely with 1.00 g of aluminum hydroxide, ai(oh)3 (s)?