Cho hỗn hợp gồm 5 chất Fe, Cu, Al, CuO, FeO. Trình bày phương pháp hóa học để chứng minh sự có mặt của từng chất trong hỗn hợp

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IX. Use the suggestions to make the meaningful sentences. 1. information / bringing / entertainment / also / is / only / but / TV / not / . ........................................................................................................................................................................................... 2. village / the / definitely / better / Life / the / changing / is / for / in / . ........................................................................................................................................................................................... 3. look for / more money / Farmers / when / family / often / other work / their / need / they / for / . ........................................................................................................................................................................................... ........................................................................................................................................................................................... 4. people / still / a week / work / in / Many / days / the countryside / seven / . ........................................................................................................................................................................................... 5. back / in / months / going / England / They / two / are / . ...........................................................................................................................................................................................