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Cho 27,6g hỗn hợp Al2O3 và Mg tác dụng vừa đủ với 900ml dung dịch H2SO4 1M loãng thu được dung dịch A. a) Tính thành phần % theo khối lượng của hỗn hợp ban đầu. b) Cho dung dịch A tác dụng với dung dịch NaOH 2M thu được kết tủa tối đa. Tính thể tích dung dịch NaOH đã dùng.
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Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.
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Cho 27,6g hỗn hợp Al2O3 và Mg tác dụng vừa đủ với 900ml dung dịch H2SO4 1M loãng thu được dung dịch...
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